21876080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8821}}^1$

素因数の和:8865

約数の個数: 40

約数和(自身を含む): 52508544

約数和(自身を除く): 30632464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8821, 17642, 35284, 44105, 70568, 88210, 141136, 176420, 273451, 352840, 546902, 705680, 1093804, 1367255, 2187608, 2734510, 4375216, 5469020, 10938040, 21876080]

約数ペア:

[(1, 21876080), (2, 10938040), (4, 5469020), (5, 4375216), (8, 2734510), (10, 2187608), (16, 1367255), (20, 1093804), (31, 705680), (40, 546902), (62, 352840), (80, 273451), (124, 176420), (155, 141136), (248, 88210), (310, 70568), (496, 44105), (620, 35284), (1240, 17642), (2480, 8821)]