128964848

素因数分解:

$2^4\times {\mathrm{419}}^1\times {\mathrm{19237}}^1$

素因数の和:19664

約数の個数: 20

約数和(自身を含む): 250478760

約数和(自身を除く): 121513912

約数列:

[1, 2, 4, 8, 16, 419, 838, 1676, 3352, 6704, 19237, 38474, 76948, 153896, 307792, 8060303, 16120606, 32241212, 64482424, 128964848]

約数ペア:

[(1, 128964848), (2, 64482424), (4, 32241212), (8, 16120606), (16, 8060303), (419, 307792), (838, 153896), (1676, 76948), (3352, 38474), (6704, 19237)]