21858460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 51649920

約数和(自身を除く): 29791460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 169, 223, 260, 290, 338, 377, 446, 580, 676, 754, 845, 892, 1115, 1508, 1690, 1885, 2230, 2899, 3380, 3770, 4460, 4901, 5798, 6467, 7540, 9802, 11596, 12934, 14495, 19604, 24505, 25868, 28990, 32335, 37687, 49010, 57980, 64670, 75374, 84071, 98020, 129340, 150748, 168142, 188435, 336284, 376870, 420355, 753740, 840710, 1092923, 1681420, 2185846, 4371692, 5464615, 10929230, 21858460]

約数ペア:

[(1, 21858460), (2, 10929230), (4, 5464615), (5, 4371692), (10, 2185846), (13, 1681420), (20, 1092923), (26, 840710), (29, 753740), (52, 420355), (58, 376870), (65, 336284), (116, 188435), (130, 168142), (145, 150748), (169, 129340), (223, 98020), (260, 84071), (290, 75374), (338, 64670), (377, 57980), (446, 49010), (580, 37687), (676, 32335), (754, 28990), (845, 25868), (892, 24505), (1115, 19604), (1508, 14495), (1690, 12934), (1885, 11596), (2230, 9802), (2899, 7540), (3380, 6467), (3770, 5798), (4460, 4901)]