263477990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{4271}}^1$

素因数の和:4508

約数の個数: 32

約数和(自身を含む): 492134400

約数和(自身を除く): 228656410

約数列:

[1, 2, 5, 10, 31, 62, 155, 199, 310, 398, 995, 1990, 4271, 6169, 8542, 12338, 21355, 30845, 42710, 61690, 132401, 264802, 662005, 849929, 1324010, 1699858, 4249645, 8499290, 26347799, 52695598, 131738995, 263477990]

約数ペア:

[(1, 263477990), (2, 131738995), (5, 52695598), (10, 26347799), (31, 8499290), (62, 4249645), (155, 1699858), (199, 1324010), (310, 849929), (398, 662005), (995, 264802), (1990, 132401), (4271, 61690), (6169, 42710), (8542, 30845), (12338, 21355)]