638647992

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{385657}}^1$

素因数の和:385692

約数の個数: 48

約数和(自身を含む): 1804879440

約数和(自身を除く): 1166231448

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656, 385657, 771314, 1156971, 1542628, 2313942, 3085256, 3470913, 4627884, 6941826, 8870111, 9255768, 13883652, 17740222, 26610333, 27767304, 35480444, 53220666, 70960888, 79830999, 106441332, 159661998, 212882664, 319323996, 638647992]

約数ペア:

[(1, 638647992), (2, 319323996), (3, 212882664), (4, 159661998), (6, 106441332), (8, 79830999), (9, 70960888), (12, 53220666), (18, 35480444), (23, 27767304), (24, 26610333), (36, 17740222), (46, 13883652), (69, 9255768), (72, 8870111), (92, 6941826), (138, 4627884), (184, 3470913), (207, 3085256), (276, 2313942), (414, 1542628), (552, 1156971), (828, 771314), (1656, 385657)]