15643120

素因数分解:

$2^4\times 5^1\times {\mathrm{195539}}^1$

素因数の和:195552

約数の個数: 20

約数和(自身を含む): 36370440

約数和(自身を除く): 20727320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195539, 391078, 782156, 977695, 1564312, 1955390, 3128624, 3910780, 7821560, 15643120]

約数ペア:

[(1, 15643120), (2, 7821560), (4, 3910780), (5, 3128624), (8, 1955390), (10, 1564312), (16, 977695), (20, 782156), (40, 391078), (80, 195539)]