20702900421

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^2\times {\mathrm{148763}}^1$

素因数の和:148870

約数の個数: 36

約数和(自身を含む): 34919076192

約数和(自身を除く): 14216175771

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2209, 2961, 6627, 15463, 19881, 46389, 139167, 148763, 446289, 1041341, 1338867, 3124023, 6991861, 9372069, 20975583, 48943027, 62926749, 146829081, 328617467, 440487243, 985852401, 2300322269, 2957557203, 6900966807, 20702900421]

約数ペア:

[(1, 20702900421), (3, 6900966807), (7, 2957557203), (9, 2300322269), (21, 985852401), (47, 440487243), (63, 328617467), (141, 146829081), (329, 62926749), (423, 48943027), (987, 20975583), (2209, 9372069), (2961, 6991861), (6627, 3124023), (15463, 1338867), (19881, 1041341), (46389, 446289), (139167, 148763)]