256507216

素因数分解:

$2^4\times 7^1\times {\mathrm{2290243}}^1$

素因数の和:2290258

約数の個数: 20

約数和(自身を含む): 567980512

約数和(自身を除く): 311473296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 2290243, 4580486, 9160972, 16031701, 18321944, 32063402, 36643888, 64126804, 128253608, 256507216]

約数ペア:

[(1, 256507216), (2, 128253608), (4, 64126804), (7, 36643888), (8, 32063402), (14, 18321944), (16, 16031701), (28, 9160972), (56, 4580486), (112, 2290243)]