51550640

素因数分解:

$2^4\times 5^1\times {\mathrm{644383}}^1$

素因数の和:644396

約数の個数: 20

約数和(自身を含む): 119855424

約数和(自身を除く): 68304784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644383, 1288766, 2577532, 3221915, 5155064, 6443830, 10310128, 12887660, 25775320, 51550640]

約数ペア:

[(1, 51550640), (2, 25775320), (4, 12887660), (5, 10310128), (8, 6443830), (10, 5155064), (16, 3221915), (20, 2577532), (40, 1288766), (80, 644383)]