1257140

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 2661120

約数和(自身を除く): 1403980

約数列:

[1, 2, 4, 5, 10, 20, 239, 263, 478, 526, 956, 1052, 1195, 1315, 2390, 2630, 4780, 5260, 62857, 125714, 251428, 314285, 628570, 1257140]

約数ペア:

[(1, 1257140), (2, 628570), (4, 314285), (5, 251428), (10, 125714), (20, 62857), (239, 5260), (263, 4780), (478, 2630), (526, 2390), (956, 1315), (1052, 1195)]