18651820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{569}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 24440180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 149, 220, 298, 569, 596, 745, 1138, 1490, 1639, 2276, 2845, 2980, 3278, 5690, 6259, 6556, 8195, 11380, 12518, 16390, 25036, 31295, 32780, 62590, 84781, 125180, 169562, 339124, 423905, 847810, 932591, 1695620, 1865182, 3730364, 4662955, 9325910, 18651820]

約数ペア:

[(1, 18651820), (2, 9325910), (4, 4662955), (5, 3730364), (10, 1865182), (11, 1695620), (20, 932591), (22, 847810), (44, 423905), (55, 339124), (110, 169562), (149, 125180), (220, 84781), (298, 62590), (569, 32780), (596, 31295), (745, 25036), (1138, 16390), (1490, 12518), (1639, 11380), (2276, 8195), (2845, 6556), (2980, 6259), (3278, 5690)]