19758320

素因数分解:

$2^4\times 5^1\times {\mathrm{246979}}^1$

素因数の和:246992

約数の個数: 20

約数和(自身を含む): 45938280

約数和(自身を除く): 26179960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246979, 493958, 987916, 1234895, 1975832, 2469790, 3951664, 4939580, 9879160, 19758320]

約数ペア:

[(1, 19758320), (2, 9879160), (4, 4939580), (5, 3951664), (8, 2469790), (10, 1975832), (16, 1234895), (20, 987916), (40, 493958), (80, 246979)]