128880986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{31573}}^1$

素因数の和:31745

約数の個数: 16

約数和(自身を含む): 209525064

約数和(自身を除く): 80644078

約数列:

[1, 2, 13, 26, 157, 314, 2041, 4082, 31573, 63146, 410449, 820898, 4956961, 9913922, 64440493, 128880986]

約数ペア:

[(1, 128880986), (2, 64440493), (13, 9913922), (26, 4956961), (157, 820898), (314, 410449), (2041, 63146), (4082, 31573)]