4438640

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:617

約数の個数: 40

約数和(自身を含む): 10432368

約数和(自身を除く): 5993728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 491, 565, 904, 982, 1130, 1808, 1964, 2260, 2455, 3928, 4520, 4910, 7856, 9040, 9820, 19640, 39280, 55483, 110966, 221932, 277415, 443864, 554830, 887728, 1109660, 2219320, 4438640]

約数ペア:

[(1, 4438640), (2, 2219320), (4, 1109660), (5, 887728), (8, 554830), (10, 443864), (16, 277415), (20, 221932), (40, 110966), (80, 55483), (113, 39280), (226, 19640), (452, 9820), (491, 9040), (565, 7856), (904, 4910), (982, 4520), (1130, 3928), (1808, 2455), (1964, 2260)]