20590160

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1579}}^1$

素因数の和:1755

約数の個数: 40

約数和(自身を含む): 48196320

約数和(自身を除く): 27606160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1579, 1630, 2608, 3158, 3260, 6316, 6520, 7895, 12632, 13040, 15790, 25264, 31580, 63160, 126320, 257377, 514754, 1029508, 1286885, 2059016, 2573770, 4118032, 5147540, 10295080, 20590160]

約数ペア:

[(1, 20590160), (2, 10295080), (4, 5147540), (5, 4118032), (8, 2573770), (10, 2059016), (16, 1286885), (20, 1029508), (40, 514754), (80, 257377), (163, 126320), (326, 63160), (652, 31580), (815, 25264), (1304, 15790), (1579, 13040), (1630, 12632), (2608, 7895), (3158, 6520), (3260, 6316)]