20319080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29881}}^1$

素因数の和:29909

約数の個数: 32

約数和(自身を含む): 48408840

約数和(自身を除く): 28089760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29881, 59762, 119524, 149405, 239048, 298810, 507977, 597620, 1015954, 1195240, 2031908, 2539885, 4063816, 5079770, 10159540, 20319080]

約数ペア:

[(1, 20319080), (2, 10159540), (4, 5079770), (5, 4063816), (8, 2539885), (10, 2031908), (17, 1195240), (20, 1015954), (34, 597620), (40, 507977), (68, 298810), (85, 239048), (136, 149405), (170, 119524), (340, 59762), (680, 29881)]