20184780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 192

約数和(自身を含む): 74898432

約数和(自身を除く): 54713652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 17, 20, 21, 22, 28, 30, 33, 34, 35, 42, 44, 51, 55, 60, 66, 68, 70, 77, 84, 85, 102, 105, 110, 119, 132, 140, 154, 165, 170, 187, 204, 210, 220, 231, 238, 255, 257, 308, 330, 340, 357, 374, 385, 420, 462, 476, 510, 514, 561, 595, 660, 714, 748, 770, 771, 924, 935, 1020, 1028, 1122, 1155, 1190, 1285, 1309, 1428, 1540, 1542, 1785, 1799, 1870, 2244, 2310, 2380, 2570, 2618, 2805, 2827, 3084, 3570, 3598, 3740, 3855, 3927, 4369, 4620, 5140, 5236, 5397, 5610, 5654, 6545, 7140, 7196, 7710, 7854, 8481, 8738, 8995, 10794, 11220, 11308, 13090, 13107, 14135, 15420, 15708, 16962, 17476, 17990, 19635, 19789, 21588, 21845, 26180, 26214, 26985, 28270, 30583, 33924, 35980, 39270, 39578, 42405, 43690, 48059, 52428, 53970, 56540, 59367, 61166, 65535, 78540, 79156, 84810, 87380, 91749, 96118, 98945, 107940, 118734, 122332, 131070, 144177, 152915, 169620, 183498, 192236, 197890, 237468, 240295, 262140, 288354, 296835, 305830, 336413, 366996, 395780, 458745, 480590, 576708, 593670, 611660, 672826, 720885, 917490, 961180, 1009239, 1187340, 1345652, 1441770, 1682065, 1834980, 2018478, 2883540, 3364130, 4036956, 5046195, 6728260, 10092390, 20184780]

約数ペア:

[(1, 20184780), (2, 10092390), (3, 6728260), (4, 5046195), (5, 4036956), (6, 3364130), (7, 2883540), (10, 2018478), (11, 1834980), (12, 1682065), (14, 1441770), (15, 1345652), (17, 1187340), (20, 1009239), (21, 961180), (22, 917490), (28, 720885), (30, 672826), (33, 611660), (34, 593670), (35, 576708), (42, 480590), (44, 458745), (51, 395780), (55, 366996), (60, 336413), (66, 305830), (68, 296835), (70, 288354), (77, 262140), (84, 240295), (85, 237468), (102, 197890), (105, 192236), (110, 183498), (119, 169620), (132, 152915), (140, 144177), (154, 131070), (165, 122332), (170, 118734), (187, 107940), (204, 98945), (210, 96118), (220, 91749), (231, 87380), (238, 84810), (255, 79156), (257, 78540), (308, 65535), (330, 61166), (340, 59367), (357, 56540), (374, 53970), (385, 52428), (420, 48059), (462, 43690), (476, 42405), (510, 39578), (514, 39270), (561, 35980), (595, 33924), (660, 30583), (714, 28270), (748, 26985), (770, 26214), (771, 26180), (924, 21845), (935, 21588), (1020, 19789), (1028, 19635), (1122, 17990), (1155, 17476), (1190, 16962), (1285, 15708), (1309, 15420), (1428, 14135), (1540, 13107), (1542, 13090), (1785, 11308), (1799, 11220), (1870, 10794), (2244, 8995), (2310, 8738), (2380, 8481), (2570, 7854), (2618, 7710), (2805, 7196), (2827, 7140), (3084, 6545), (3570, 5654), (3598, 5610), (3740, 5397), (3855, 5236), (3927, 5140), (4369, 4620)]