251444180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{1481}}^1$

素因数の和:2156

約数の個数: 48

約数和(自身を含む): 569906064

約数和(自身を除く): 318461884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 653, 1306, 1481, 2612, 2962, 3265, 5924, 6530, 7405, 8489, 13060, 14810, 16978, 19253, 29620, 33956, 38506, 42445, 77012, 84890, 96265, 169780, 192530, 385060, 967093, 1934186, 3868372, 4835465, 9670930, 12572209, 19341860, 25144418, 50288836, 62861045, 125722090, 251444180]

約数ペア:

[(1, 251444180), (2, 125722090), (4, 62861045), (5, 50288836), (10, 25144418), (13, 19341860), (20, 12572209), (26, 9670930), (52, 4835465), (65, 3868372), (130, 1934186), (260, 967093), (653, 385060), (1306, 192530), (1481, 169780), (2612, 96265), (2962, 84890), (3265, 77012), (5924, 42445), (6530, 38506), (7405, 33956), (8489, 29620), (13060, 19253), (14810, 16978)]