19909890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:74

約数の個数: 288

約数和(自身を含む): 73996416

約数和(自身を除く): 54086526

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 21, 22, 26, 30, 33, 34, 35, 39, 42, 45, 51, 55, 63, 65, 66, 70, 77, 78, 85, 90, 91, 99, 102, 105, 110, 117, 119, 126, 130, 143, 153, 154, 165, 169, 170, 182, 187, 195, 198, 210, 221, 231, 234, 238, 255, 273, 286, 306, 315, 330, 338, 357, 374, 385, 390, 429, 442, 455, 462, 495, 507, 510, 546, 561, 585, 595, 630, 663, 693, 714, 715, 765, 770, 819, 845, 858, 910, 935, 990, 1001, 1014, 1071, 1105, 1122, 1155, 1170, 1183, 1190, 1287, 1309, 1326, 1365, 1386, 1430, 1521, 1530, 1547, 1638, 1683, 1690, 1785, 1859, 1870, 1989, 2002, 2142, 2145, 2210, 2310, 2366, 2431, 2535, 2574, 2618, 2730, 2805, 2873, 3003, 3042, 3094, 3315, 3366, 3465, 3549, 3570, 3718, 3927, 3978, 4095, 4290, 4641, 4862, 5005, 5070, 5355, 5577, 5610, 5746, 5915, 6006, 6435, 6545, 6630, 6930, 7098, 7293, 7605, 7735, 7854, 8190, 8415, 8619, 9009, 9282, 9295, 9945, 10010, 10647, 10710, 11154, 11781, 11830, 12155, 12870, 13013, 13090, 13923, 14365, 14586, 15015, 15210, 15470, 16731, 16830, 17017, 17238, 17745, 18018, 18590, 19635, 19890, 20111, 21294, 21879, 23205, 23562, 24310, 25857, 26026, 27846, 27885, 28730, 30030, 31603, 33462, 34034, 35490, 36465, 39039, 39270, 40222, 43095, 43758, 45045, 46410, 51051, 51714, 53235, 55770, 58905, 60333, 63206, 65065, 69615, 72930, 78078, 83655, 85085, 86190, 90090, 94809, 100555, 102102, 106470, 109395, 117117, 117810, 120666, 129285, 130130, 139230, 153153, 158015, 167310, 170170, 180999, 189618, 195195, 201110, 218790, 221221, 234234, 255255, 258570, 284427, 301665, 306306, 316030, 361998, 390390, 442442, 474045, 510510, 568854, 585585, 603330, 663663, 765765, 904995, 948090, 1106105, 1171170, 1327326, 1422135, 1531530, 1809990, 1990989, 2212210, 2844270, 3318315, 3981978, 6636630, 9954945, 19909890]

約数ペア:

[(1, 19909890), (2, 9954945), (3, 6636630), (5, 3981978), (6, 3318315), (7, 2844270), (9, 2212210), (10, 1990989), (11, 1809990), (13, 1531530), (14, 1422135), (15, 1327326), (17, 1171170), (18, 1106105), (21, 948090), (22, 904995), (26, 765765), (30, 663663), (33, 603330), (34, 585585), (35, 568854), (39, 510510), (42, 474045), (45, 442442), (51, 390390), (55, 361998), (63, 316030), (65, 306306), (66, 301665), (70, 284427), (77, 258570), (78, 255255), (85, 234234), (90, 221221), (91, 218790), (99, 201110), (102, 195195), (105, 189618), (110, 180999), (117, 170170), (119, 167310), (126, 158015), (130, 153153), (143, 139230), (153, 130130), (154, 129285), (165, 120666), (169, 117810), (170, 117117), (182, 109395), (187, 106470), (195, 102102), (198, 100555), (210, 94809), (221, 90090), (231, 86190), (234, 85085), (238, 83655), (255, 78078), (273, 72930), (286, 69615), (306, 65065), (315, 63206), (330, 60333), (338, 58905), (357, 55770), (374, 53235), (385, 51714), (390, 51051), (429, 46410), (442, 45045), (455, 43758), (462, 43095), (495, 40222), (507, 39270), (510, 39039), (546, 36465), (561, 35490), (585, 34034), (595, 33462), (630, 31603), (663, 30030), (693, 28730), (714, 27885), (715, 27846), (765, 26026), (770, 25857), (819, 24310), (845, 23562), (858, 23205), (910, 21879), (935, 21294), (990, 20111), (1001, 19890), (1014, 19635), (1071, 18590), (1105, 18018), (1122, 17745), (1155, 17238), (1170, 17017), (1183, 16830), (1190, 16731), (1287, 15470), (1309, 15210), (1326, 15015), (1365, 14586), (1386, 14365), (1430, 13923), (1521, 13090), (1530, 13013), (1547, 12870), (1638, 12155), (1683, 11830), (1690, 11781), (1785, 11154), (1859, 10710), (1870, 10647), (1989, 10010), (2002, 9945), (2142, 9295), (2145, 9282), (2210, 9009), (2310, 8619), (2366, 8415), (2431, 8190), (2535, 7854), (2574, 7735), (2618, 7605), (2730, 7293), (2805, 7098), (2873, 6930), (3003, 6630), (3042, 6545), (3094, 6435), (3315, 6006), (3366, 5915), (3465, 5746), (3549, 5610), (3570, 5577), (3718, 5355), (3927, 5070), (3978, 5005), (4095, 4862), (4290, 4641)]