20964570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:176

約数の個数: 128

約数和(自身を含む): 60279552

約数和(自身を除く): 39314982

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 30, 33, 34, 37, 51, 55, 66, 74, 85, 101, 102, 110, 111, 165, 170, 185, 187, 202, 222, 255, 303, 330, 370, 374, 407, 505, 510, 555, 561, 606, 629, 814, 935, 1010, 1110, 1111, 1122, 1221, 1258, 1515, 1717, 1870, 1887, 2035, 2222, 2442, 2805, 3030, 3145, 3333, 3434, 3737, 3774, 4070, 5151, 5555, 5610, 6105, 6290, 6666, 6919, 7474, 8585, 9435, 10302, 11110, 11211, 12210, 13838, 16665, 17170, 18685, 18870, 18887, 20757, 22422, 25755, 33330, 34595, 37370, 37774, 41107, 41514, 51510, 56055, 56661, 63529, 69190, 82214, 94435, 103785, 112110, 113322, 123321, 127058, 188870, 190587, 205535, 207570, 246642, 283305, 317645, 381174, 411070, 566610, 616605, 635290, 698819, 952935, 1233210, 1397638, 1905870, 2096457, 3494095, 4192914, 6988190, 10482285, 20964570]

約数ペア:

[(1, 20964570), (2, 10482285), (3, 6988190), (5, 4192914), (6, 3494095), (10, 2096457), (11, 1905870), (15, 1397638), (17, 1233210), (22, 952935), (30, 698819), (33, 635290), (34, 616605), (37, 566610), (51, 411070), (55, 381174), (66, 317645), (74, 283305), (85, 246642), (101, 207570), (102, 205535), (110, 190587), (111, 188870), (165, 127058), (170, 123321), (185, 113322), (187, 112110), (202, 103785), (222, 94435), (255, 82214), (303, 69190), (330, 63529), (370, 56661), (374, 56055), (407, 51510), (505, 41514), (510, 41107), (555, 37774), (561, 37370), (606, 34595), (629, 33330), (814, 25755), (935, 22422), (1010, 20757), (1110, 18887), (1111, 18870), (1122, 18685), (1221, 17170), (1258, 16665), (1515, 13838), (1717, 12210), (1870, 11211), (1887, 11110), (2035, 10302), (2222, 9435), (2442, 8585), (2805, 7474), (3030, 6919), (3145, 6666), (3333, 6290), (3434, 6105), (3737, 5610), (3774, 5555), (4070, 5151)]