20921603

素因数分解:

${\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:418

約数の個数: 16

約数和(自身を含む): 22861440

約数和(自身を除く): 1939837

約数列:

[1, 19, 41, 107, 251, 779, 2033, 4387, 4769, 10291, 26857, 83353, 195529, 510283, 1101137, 20921603]

約数ペア:

[(1, 20921603), (19, 1101137), (41, 510283), (107, 195529), (251, 83353), (779, 26857), (2033, 10291), (4387, 4769)]