21555352

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1076

約数の個数: 64

約数和(自身を含む): 51508800

約数和(自身を除く): 29953448

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 29, 52, 56, 58, 91, 104, 116, 182, 203, 232, 364, 377, 406, 728, 754, 812, 1021, 1508, 1624, 2042, 2639, 3016, 4084, 5278, 7147, 8168, 10556, 13273, 14294, 21112, 26546, 28588, 29609, 53092, 57176, 59218, 92911, 106184, 118436, 185822, 207263, 236872, 371644, 384917, 414526, 743288, 769834, 829052, 1539668, 1658104, 2694419, 3079336, 5388838, 10777676, 21555352]

約数ペア:

[(1, 21555352), (2, 10777676), (4, 5388838), (7, 3079336), (8, 2694419), (13, 1658104), (14, 1539668), (26, 829052), (28, 769834), (29, 743288), (52, 414526), (56, 384917), (58, 371644), (91, 236872), (104, 207263), (116, 185822), (182, 118436), (203, 106184), (232, 92911), (364, 59218), (377, 57176), (406, 53092), (728, 29609), (754, 28588), (812, 26546), (1021, 21112), (1508, 14294), (1624, 13273), (2042, 10556), (2639, 8168), (3016, 7147), (4084, 5278)]