20957140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1632

約数の個数: 48

約数和(自身を含む): 47537280

約数和(自身を除く): 26580140

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 46, 58, 92, 115, 116, 145, 230, 290, 460, 580, 667, 1334, 1571, 2668, 3142, 3335, 6284, 6670, 7855, 13340, 15710, 31420, 36133, 45559, 72266, 91118, 144532, 180665, 182236, 227795, 361330, 455590, 722660, 911180, 1047857, 2095714, 4191428, 5239285, 10478570, 20957140]

約数ペア:

[(1, 20957140), (2, 10478570), (4, 5239285), (5, 4191428), (10, 2095714), (20, 1047857), (23, 911180), (29, 722660), (46, 455590), (58, 361330), (92, 227795), (115, 182236), (116, 180665), (145, 144532), (230, 91118), (290, 72266), (460, 45559), (580, 36133), (667, 31420), (1334, 15710), (1571, 13340), (2668, 7855), (3142, 6670), (3335, 6284)]