20651631

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^2$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 38860416

約数和(自身を除く): 18208785

約数列:

[1, 3, 7, 11, 13, 21, 23, 33, 39, 69, 77, 91, 143, 161, 169, 231, 253, 273, 299, 429, 483, 507, 529, 759, 897, 1001, 1183, 1587, 1771, 1859, 2093, 3003, 3289, 3549, 3703, 3887, 5313, 5577, 5819, 6279, 6877, 9867, 11109, 11661, 13013, 17457, 20631, 23023, 27209, 39039, 40733, 42757, 48139, 69069, 75647, 81627, 89401, 122199, 128271, 144417, 226941, 268203, 299299, 529529, 625807, 897897, 983411, 1588587, 1877421, 2950233, 6883877, 20651631]

約数ペア:

[(1, 20651631), (3, 6883877), (7, 2950233), (11, 1877421), (13, 1588587), (21, 983411), (23, 897897), (33, 625807), (39, 529529), (69, 299299), (77, 268203), (91, 226941), (143, 144417), (161, 128271), (169, 122199), (231, 89401), (253, 81627), (273, 75647), (299, 69069), (429, 48139), (483, 42757), (507, 40733), (529, 39039), (759, 27209), (897, 23023), (1001, 20631), (1183, 17457), (1587, 13013), (1771, 11661), (1859, 11109), (2093, 9867), (3003, 6877), (3289, 6279), (3549, 5819), (3703, 5577), (3887, 5313)]