20920822

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{2621}}^1$

素因数の和:2943

約数の個数: 16

約数和(自身を含む): 33918192

約数和(自身を除く): 12997370

約数列:

[1, 2, 13, 26, 307, 614, 2621, 3991, 5242, 7982, 34073, 68146, 804647, 1609294, 10460411, 20920822]

約数ペア:

[(1, 20920822), (2, 10460411), (13, 1609294), (26, 804647), (307, 68146), (614, 34073), (2621, 7982), (3991, 5242)]