20941180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{337}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 47698560

約数和(自身を除く): 26757380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 337, 478, 674, 956, 1195, 1348, 1685, 2390, 3107, 3370, 4381, 4780, 6214, 6740, 8762, 12428, 15535, 17524, 21905, 31070, 43810, 62140, 80543, 87620, 161086, 322172, 402715, 805430, 1047059, 1610860, 2094118, 4188236, 5235295, 10470590, 20941180]

約数ペア:

[(1, 20941180), (2, 10470590), (4, 5235295), (5, 4188236), (10, 2094118), (13, 1610860), (20, 1047059), (26, 805430), (52, 402715), (65, 322172), (130, 161086), (239, 87620), (260, 80543), (337, 62140), (478, 43810), (674, 31070), (956, 21905), (1195, 17524), (1348, 15535), (1685, 12428), (2390, 8762), (3107, 6740), (3370, 6214), (4381, 4780)]