20118040

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1091}}^1$

素因数の和:1563

約数の個数: 32

約数和(自身を含む): 45405360

約数和(自身を除く): 25287320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1091, 1844, 2182, 2305, 3688, 4364, 4610, 5455, 8728, 9220, 10910, 18440, 21820, 43640, 502951, 1005902, 2011804, 2514755, 4023608, 5029510, 10059020, 20118040]

約数ペア:

[(1, 20118040), (2, 10059020), (4, 5029510), (5, 4023608), (8, 2514755), (10, 2011804), (20, 1005902), (40, 502951), (461, 43640), (922, 21820), (1091, 18440), (1844, 10910), (2182, 9220), (2305, 8728), (3688, 5455), (4364, 4610)]