21814270

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 18776450

約数列:

[1, 2, 5, 10, 53, 79, 106, 158, 265, 395, 521, 530, 790, 1042, 2605, 4187, 5210, 8374, 20935, 27613, 41159, 41870, 55226, 82318, 138065, 205795, 276130, 411590, 2181427, 4362854, 10907135, 21814270]

約数ペア:

[(1, 21814270), (2, 10907135), (5, 4362854), (10, 2181427), (53, 411590), (79, 276130), (106, 205795), (158, 138065), (265, 82318), (395, 55226), (521, 41870), (530, 41159), (790, 27613), (1042, 20935), (2605, 8374), (4187, 5210)]