20123960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16229}}^1$

素因数の和:16271

約数の個数: 32

約数和(自身を含む): 46742400

約数和(自身を除く): 26618440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16229, 32458, 64916, 81145, 129832, 162290, 324580, 503099, 649160, 1006198, 2012396, 2515495, 4024792, 5030990, 10061980, 20123960]

約数ペア:

[(1, 20123960), (2, 10061980), (4, 5030990), (5, 4024792), (8, 2515495), (10, 2012396), (20, 1006198), (31, 649160), (40, 503099), (62, 324580), (124, 162290), (155, 129832), (248, 81145), (310, 64916), (620, 32458), (1240, 16229)]