21260978

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{1117}}^1$

素因数の和:1457

約数の個数: 16

約数和(自身を含む): 33057024

約数和(自身を除く): 11796046

約数列:

[1, 2, 31, 62, 307, 614, 1117, 2234, 9517, 19034, 34627, 69254, 342919, 685838, 10630489, 21260978]

約数ペア:

[(1, 21260978), (2, 10630489), (31, 685838), (62, 342919), (307, 69254), (614, 34627), (1117, 19034), (2234, 9517)]