71815640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{138107}}^1$

素因数の和:138131

約数の個数: 32

約数和(自身を含む): 174016080

約数和(自身を除く): 102200440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 138107, 276214, 552428, 690535, 1104856, 1381070, 1795391, 2762140, 3590782, 5524280, 7181564, 8976955, 14363128, 17953910, 35907820, 71815640]

約数ペア:

[(1, 71815640), (2, 35907820), (4, 17953910), (5, 14363128), (8, 8976955), (10, 7181564), (13, 5524280), (20, 3590782), (26, 2762140), (40, 1795391), (52, 1381070), (65, 1104856), (104, 690535), (130, 552428), (260, 276214), (520, 138107)]