639885742

素因数分解:

$2^1\times {\mathrm{271}}^1\times {\mathrm{631}}^1\times {\mathrm{1871}}^1$

素因数の和:2775

約数の個数: 16

約数和(自身を含む): 965412864

約数和(自身を除く): 325527122

約数列:

[1, 2, 271, 542, 631, 1262, 1871, 3742, 171001, 342002, 507041, 1014082, 1180601, 2361202, 319942871, 639885742]

約数ペア:

[(1, 639885742), (2, 319942871), (271, 2361202), (542, 1180601), (631, 1014082), (1262, 507041), (1871, 342002), (3742, 171001)]