663421825

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{219313}}^1$

素因数の和:219345

約数の個数: 18

約数和(自身を含む): 904231622

約数和(自身を除く): 240809797

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 219313, 1096565, 2412443, 5482825, 12062215, 26536873, 60311075, 132684365, 663421825]

約数ペア:

[(1, 663421825), (5, 132684365), (11, 60311075), (25, 26536873), (55, 12062215), (121, 5482825), (275, 2412443), (605, 1096565), (3025, 219313)]