20488325

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1$

素因数の和:566

約数の個数: 36

約数和(自身を含む): 30130884

約数和(自身を除く): 9642559

約数列:

[1, 5, 11, 13, 25, 55, 65, 121, 143, 275, 325, 521, 605, 715, 1573, 2605, 3025, 3575, 5731, 6773, 7865, 13025, 28655, 33865, 39325, 63041, 74503, 143275, 169325, 315205, 372515, 819533, 1576025, 1862575, 4097665, 20488325]

約数ペア:

[(1, 20488325), (5, 4097665), (11, 1862575), (13, 1576025), (25, 819533), (55, 372515), (65, 315205), (121, 169325), (143, 143275), (275, 74503), (325, 63041), (521, 39325), (605, 33865), (715, 28655), (1573, 13025), (2605, 7865), (3025, 6773), (3575, 5731)]