64427380

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{19763}}^1$

素因数の和:19935

約数の個数: 24

約数和(自身を含む): 136134432

約数和(自身を除く): 71707052

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 19763, 39526, 79052, 98815, 197630, 395260, 3221369, 6442738, 12885476, 16106845, 32213690, 64427380]

約数ペア:

[(1, 64427380), (2, 32213690), (4, 16106845), (5, 12885476), (10, 6442738), (20, 3221369), (163, 395260), (326, 197630), (652, 98815), (815, 79052), (1630, 39526), (3260, 19763)]