21928160

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4421}}^1$

素因数の和:4467

約数の個数: 48

約数和(自身を含む): 53488512

約数和(自身を除く): 31560352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4421, 4960, 8842, 17684, 22105, 35368, 44210, 70736, 88420, 137051, 141472, 176840, 274102, 353680, 548204, 685255, 707360, 1096408, 1370510, 2192816, 2741020, 4385632, 5482040, 10964080, 21928160]

約数ペア:

[(1, 21928160), (2, 10964080), (4, 5482040), (5, 4385632), (8, 2741020), (10, 2192816), (16, 1370510), (20, 1096408), (31, 707360), (32, 685255), (40, 548204), (62, 353680), (80, 274102), (124, 176840), (155, 141472), (160, 137051), (248, 88420), (310, 70736), (496, 44210), (620, 35368), (992, 22105), (1240, 17684), (2480, 8842), (4421, 4960)]