17813125

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2591}}^1$

素因数の和:2622

約数の個数: 20

約数和(自身を含む): 24292224

約数和(自身を除く): 6479099

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2591, 6875, 12955, 28501, 64775, 142505, 323875, 712525, 1619375, 3562625, 17813125]

約数ペア:

[(1, 17813125), (5, 3562625), (11, 1619375), (25, 712525), (55, 323875), (125, 142505), (275, 64775), (625, 28501), (1375, 12955), (2591, 6875)]