20105515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{6827}}^1$

素因数の和:6882

約数の個数: 16

約数和(自身を含む): 26219520

約数和(自身を除く): 6114005

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 6827, 34135, 129713, 211637, 648565, 1058185, 4021103, 20105515]

約数ペア:

[(1, 20105515), (5, 4021103), (19, 1058185), (31, 648565), (95, 211637), (155, 129713), (589, 34135), (2945, 6827)]