20531665

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3137}}^1$

素因数の和:3177

約数の個数: 32

約数和(自身を含む): 32534784

約数和(自身を除く): 12003119

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3137, 6545, 15685, 21959, 34507, 53329, 109795, 172535, 241549, 266645, 373303, 586619, 1207745, 1866515, 2933095, 4106333, 20531665]

約数ペア:

[(1, 20531665), (5, 4106333), (7, 2933095), (11, 1866515), (17, 1207745), (35, 586619), (55, 373303), (77, 266645), (85, 241549), (119, 172535), (187, 109795), (385, 53329), (595, 34507), (935, 21959), (1309, 15685), (3137, 6545)]