988894640

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{109391}}^1$

素因数の和:109517

約数の個数: 40

約数和(自身を含む): 2319547968

約数和(自身を除く): 1330653328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 9040, 109391, 218782, 437564, 546955, 875128, 1093910, 1750256, 2187820, 4375640, 8751280, 12361183, 24722366, 49444732, 61805915, 98889464, 123611830, 197778928, 247223660, 494447320, 988894640]

約数ペア:

[(1, 988894640), (2, 494447320), (4, 247223660), (5, 197778928), (8, 123611830), (10, 98889464), (16, 61805915), (20, 49444732), (40, 24722366), (80, 12361183), (113, 8751280), (226, 4375640), (452, 2187820), (565, 1750256), (904, 1093910), (1130, 875128), (1808, 546955), (2260, 437564), (4520, 218782), (9040, 109391)]