20811230

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23978530

約数列:

[1, 2, 5, 10, 11, 17, 22, 31, 34, 55, 62, 85, 110, 155, 170, 187, 310, 341, 359, 374, 527, 682, 718, 935, 1054, 1705, 1795, 1870, 2635, 3410, 3590, 3949, 5270, 5797, 6103, 7898, 11129, 11594, 12206, 19745, 22258, 28985, 30515, 39490, 55645, 57970, 61030, 67133, 111290, 122419, 134266, 189193, 244838, 335665, 378386, 612095, 671330, 945965, 1224190, 1891930, 2081123, 4162246, 10405615, 20811230]

約数ペア:

[(1, 20811230), (2, 10405615), (5, 4162246), (10, 2081123), (11, 1891930), (17, 1224190), (22, 945965), (31, 671330), (34, 612095), (55, 378386), (62, 335665), (85, 244838), (110, 189193), (155, 134266), (170, 122419), (187, 111290), (310, 67133), (341, 61030), (359, 57970), (374, 55645), (527, 39490), (682, 30515), (718, 28985), (935, 22258), (1054, 19745), (1705, 12206), (1795, 11594), (1870, 11129), (2635, 7898), (3410, 6103), (3590, 5797), (3949, 5270)]