64471825

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{21313}}^1$

素因数の和:21345

約数の個数: 18

約数和(自身を含む): 87877622

約数和(自身を除く): 23405797

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 21313, 106565, 234443, 532825, 1172215, 2578873, 5861075, 12894365, 64471825]

約数ペア:

[(1, 64471825), (5, 12894365), (11, 5861075), (25, 2578873), (55, 1172215), (121, 532825), (275, 234443), (605, 106565), (3025, 21313)]