28938420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:239

約数の個数: 216

約数和(自身を含む): 108678024

約数和(自身を除く): 79739604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 49, 51, 60, 63, 68, 70, 84, 85, 90, 98, 102, 105, 119, 126, 140, 147, 153, 170, 180, 193, 196, 204, 210, 238, 245, 252, 255, 294, 306, 315, 340, 357, 386, 420, 441, 476, 490, 510, 579, 588, 595, 612, 630, 714, 735, 765, 772, 833, 882, 965, 980, 1020, 1071, 1158, 1190, 1260, 1351, 1428, 1470, 1530, 1666, 1737, 1764, 1785, 1930, 2142, 2205, 2316, 2380, 2499, 2702, 2895, 2940, 3060, 3281, 3332, 3474, 3570, 3860, 4053, 4165, 4284, 4410, 4998, 5355, 5404, 5790, 6562, 6755, 6948, 7140, 7497, 8106, 8330, 8685, 8820, 9457, 9843, 9996, 10710, 11580, 12159, 12495, 13124, 13510, 14994, 16212, 16405, 16660, 17370, 18914, 19686, 20265, 21420, 22967, 24318, 24990, 27020, 28371, 29529, 29988, 32810, 34740, 37485, 37828, 39372, 40530, 45934, 47285, 48636, 49215, 49980, 56742, 59058, 60795, 65620, 68901, 74970, 81060, 85113, 91868, 94570, 98430, 113484, 114835, 118116, 121590, 137802, 141855, 147645, 149940, 160769, 170226, 189140, 196860, 206703, 229670, 243180, 275604, 283710, 295290, 321538, 340452, 344505, 413406, 425565, 459340, 482307, 567420, 590580, 643076, 689010, 803845, 826812, 851130, 964614, 1033515, 1378020, 1446921, 1607690, 1702260, 1929228, 2067030, 2411535, 2893842, 3215380, 4134060, 4823070, 5787684, 7234605, 9646140, 14469210, 28938420]

約数ペア:

[(1, 28938420), (2, 14469210), (3, 9646140), (4, 7234605), (5, 5787684), (6, 4823070), (7, 4134060), (9, 3215380), (10, 2893842), (12, 2411535), (14, 2067030), (15, 1929228), (17, 1702260), (18, 1607690), (20, 1446921), (21, 1378020), (28, 1033515), (30, 964614), (34, 851130), (35, 826812), (36, 803845), (42, 689010), (45, 643076), (49, 590580), (51, 567420), (60, 482307), (63, 459340), (68, 425565), (70, 413406), (84, 344505), (85, 340452), (90, 321538), (98, 295290), (102, 283710), (105, 275604), (119, 243180), (126, 229670), (140, 206703), (147, 196860), (153, 189140), (170, 170226), (180, 160769), (193, 149940), (196, 147645), (204, 141855), (210, 137802), (238, 121590), (245, 118116), (252, 114835), (255, 113484), (294, 98430), (306, 94570), (315, 91868), (340, 85113), (357, 81060), (386, 74970), (420, 68901), (441, 65620), (476, 60795), (490, 59058), (510, 56742), (579, 49980), (588, 49215), (595, 48636), (612, 47285), (630, 45934), (714, 40530), (735, 39372), (765, 37828), (772, 37485), (833, 34740), (882, 32810), (965, 29988), (980, 29529), (1020, 28371), (1071, 27020), (1158, 24990), (1190, 24318), (1260, 22967), (1351, 21420), (1428, 20265), (1470, 19686), (1530, 18914), (1666, 17370), (1737, 16660), (1764, 16405), (1785, 16212), (1930, 14994), (2142, 13510), (2205, 13124), (2316, 12495), (2380, 12159), (2499, 11580), (2702, 10710), (2895, 9996), (2940, 9843), (3060, 9457), (3281, 8820), (3332, 8685), (3474, 8330), (3570, 8106), (3860, 7497), (4053, 7140), (4165, 6948), (4284, 6755), (4410, 6562), (4998, 5790), (5355, 5404)]