90804080

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{6271}}^1$

素因数の和:6465

約数の個数: 40

約数和(自身を含む): 212319744

約数和(自身を除く): 121515664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 6271, 7240, 12542, 14480, 25084, 31355, 50168, 62710, 100336, 125420, 250840, 501680, 1135051, 2270102, 4540204, 5675255, 9080408, 11350510, 18160816, 22701020, 45402040, 90804080]

約数ペア:

[(1, 90804080), (2, 45402040), (4, 22701020), (5, 18160816), (8, 11350510), (10, 9080408), (16, 5675255), (20, 4540204), (40, 2270102), (80, 1135051), (181, 501680), (362, 250840), (724, 125420), (905, 100336), (1448, 62710), (1810, 50168), (2896, 31355), (3620, 25084), (6271, 14480), (7240, 12542)]