20778960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86579}}^1$

素因数の和:86595

約数の個数: 40

約数和(自身を含む): 64415520

約数和(自身を除く): 43636560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86579, 173158, 259737, 346316, 432895, 519474, 692632, 865790, 1038948, 1298685, 1385264, 1731580, 2077896, 2597370, 3463160, 4155792, 5194740, 6926320, 10389480, 20778960]

約数ペア:

[(1, 20778960), (2, 10389480), (3, 6926320), (4, 5194740), (5, 4155792), (6, 3463160), (8, 2597370), (10, 2077896), (12, 1731580), (15, 1385264), (16, 1298685), (20, 1038948), (24, 865790), (30, 692632), (40, 519474), (48, 432895), (60, 346316), (80, 259737), (120, 173158), (240, 86579)]