20787085660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4972987}}^1$

素因数の和:4973026

約数の個数: 48

約数和(自身を含む): 50127719040

約数和(自身を除く): 29340633380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4972987, 9945974, 19891948, 24864935, 49729870, 54702857, 94486753, 99459740, 109405714, 188973506, 218811428, 273514285, 377947012, 472433765, 547028570, 944867530, 1039354283, 1094057140, 1889735060, 2078708566, 4157417132, 5196771415, 10393542830, 20787085660]

約数ペア:

[(1, 20787085660), (2, 10393542830), (4, 5196771415), (5, 4157417132), (10, 2078708566), (11, 1889735060), (19, 1094057140), (20, 1039354283), (22, 944867530), (38, 547028570), (44, 472433765), (55, 377947012), (76, 273514285), (95, 218811428), (110, 188973506), (190, 109405714), (209, 99459740), (220, 94486753), (380, 54702857), (418, 49729870), (836, 24864935), (1045, 19891948), (2090, 9945974), (4180, 4972987)]