71090975

素因数分解:

$5^2\times {\mathrm{89}}^2\times {\mathrm{359}}^1$

素因数の和:547

約数の個数: 18

約数和(自身を含む): 89402760

約数和(自身を除く): 18311785

約数列:

[1, 5, 25, 89, 359, 445, 1795, 2225, 7921, 8975, 31951, 39605, 159755, 198025, 798775, 2843639, 14218195, 71090975]

約数ペア:

[(1, 71090975), (5, 14218195), (25, 2843639), (89, 798775), (359, 198025), (445, 159755), (1795, 39605), (2225, 31951), (7921, 8975)]