21754975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 29640960

約数和(自身を除く): 7885985

約数列:

[1, 5, 11, 25, 55, 239, 275, 331, 1195, 1655, 2629, 3641, 5975, 8275, 13145, 18205, 65725, 79109, 91025, 395545, 870199, 1977725, 4350995, 21754975]

約数ペア:

[(1, 21754975), (5, 4350995), (11, 1977725), (25, 870199), (55, 395545), (239, 91025), (275, 79109), (331, 65725), (1195, 18205), (1655, 13145), (2629, 8275), (3641, 5975)]