21117278

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4001}}^1$

素因数の和:4052

約数の個数: 32

約数和(自身を含む): 40340160

約数和(自身を除く): 19222882

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 182, 203, 377, 406, 754, 2639, 4001, 5278, 8002, 28007, 52013, 56014, 104026, 116029, 232058, 364091, 728182, 812203, 1508377, 1624406, 3016754, 10558639, 21117278]

約数ペア:

[(1, 21117278), (2, 10558639), (7, 3016754), (13, 1624406), (14, 1508377), (26, 812203), (29, 728182), (58, 364091), (91, 232058), (182, 116029), (203, 104026), (377, 56014), (406, 52013), (754, 28007), (2639, 8002), (4001, 5278)]