28900100

素因数分解:

$2^2\times 5^2\times {\mathrm{289001}}^1$

素因数の和:289015

約数の個数: 18

約数和(自身を含む): 62713434

約数和(自身を除く): 33813334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 289001, 578002, 1156004, 1445005, 2890010, 5780020, 7225025, 14450050, 28900100]

約数ペア:

[(1, 28900100), (2, 14450050), (4, 7225025), (5, 5780020), (10, 2890010), (20, 1445005), (25, 1156004), (50, 578002), (100, 289001)]