21124825

素因数分解:

$5^2\times {\mathrm{43}}^2\times {\mathrm{457}}^1$

素因数の和:553

約数の個数: 18

約数和(自身を含む): 26876814

約数和(自身を除く): 5751989

約数列:

[1, 5, 25, 43, 215, 457, 1075, 1849, 2285, 9245, 11425, 19651, 46225, 98255, 491275, 844993, 4224965, 21124825]

約数ペア:

[(1, 21124825), (5, 4224965), (25, 844993), (43, 491275), (215, 98255), (457, 46225), (1075, 19651), (1849, 11425), (2285, 9245)]