21013465

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{739}}^1$

素因数の和:813

約数の個数: 24

約数和(自身を含む): 28344960

約数和(自身を除く): 7331495

約数列:

[1, 5, 11, 47, 55, 121, 235, 517, 605, 739, 2585, 3695, 5687, 8129, 28435, 34733, 40645, 89419, 173665, 382063, 447095, 1910315, 4202693, 21013465]

約数ペア:

[(1, 21013465), (5, 4202693), (11, 1910315), (47, 447095), (55, 382063), (121, 173665), (235, 89419), (517, 40645), (605, 34733), (739, 28435), (2585, 8129), (3695, 5687)]