20490730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{967}}^1$

素因数の和:1150

約数の個数: 32

約数和(自身を含む): 40005504

約数和(自身を除く): 19514774

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163, 326, 815, 967, 1630, 1934, 2119, 4238, 4835, 9670, 10595, 12571, 21190, 25142, 62855, 125710, 157621, 315242, 788105, 1576210, 2049073, 4098146, 10245365, 20490730]

約数ペア:

[(1, 20490730), (2, 10245365), (5, 4098146), (10, 2049073), (13, 1576210), (26, 788105), (65, 315242), (130, 157621), (163, 125710), (326, 62855), (815, 25142), (967, 21190), (1630, 12571), (1934, 10595), (2119, 9670), (4238, 4835)]