21528756

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 57028608

約数和(自身を除く): 35499852

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 101, 124, 186, 191, 202, 279, 303, 372, 382, 404, 558, 573, 606, 764, 909, 1116, 1146, 1212, 1719, 1818, 2292, 3131, 3438, 3636, 5921, 6262, 6876, 9393, 11842, 12524, 17763, 18786, 19291, 23684, 28179, 35526, 37572, 38582, 53289, 56358, 57873, 71052, 77164, 106578, 112716, 115746, 173619, 213156, 231492, 347238, 598021, 694476, 1196042, 1794063, 2392084, 3588126, 5382189, 7176252, 10764378, 21528756]

約数ペア:

[(1, 21528756), (2, 10764378), (3, 7176252), (4, 5382189), (6, 3588126), (9, 2392084), (12, 1794063), (18, 1196042), (31, 694476), (36, 598021), (62, 347238), (93, 231492), (101, 213156), (124, 173619), (186, 115746), (191, 112716), (202, 106578), (279, 77164), (303, 71052), (372, 57873), (382, 56358), (404, 53289), (558, 38582), (573, 37572), (606, 35526), (764, 28179), (909, 23684), (1116, 19291), (1146, 18786), (1212, 17763), (1719, 12524), (1818, 11842), (2292, 9393), (3131, 6876), (3438, 6262), (3636, 5921)]