405199160

素因数分解:

$2^3\times 5^1\times {\mathrm{10129979}}^1$

素因数の和:10129990

約数の個数: 16

約数和(自身を含む): 911698200

約数和(自身を除く): 506499040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10129979, 20259958, 40519916, 50649895, 81039832, 101299790, 202599580, 405199160]

約数ペア:

[(1, 405199160), (2, 202599580), (4, 101299790), (5, 81039832), (8, 50649895), (10, 40519916), (20, 20259958), (40, 10129979)]