31230040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 73244160

約数和(自身を除く): 42014120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 172, 215, 268, 271, 335, 344, 430, 536, 542, 670, 860, 1084, 1340, 1355, 1720, 2168, 2680, 2710, 2881, 5420, 5762, 10840, 11524, 11653, 14405, 18157, 23048, 23306, 28810, 36314, 46612, 57620, 58265, 72628, 90785, 93224, 115240, 116530, 145256, 181570, 233060, 363140, 466120, 726280, 780751, 1561502, 3123004, 3903755, 6246008, 7807510, 15615020, 31230040]

約数ペア:

[(1, 31230040), (2, 15615020), (4, 7807510), (5, 6246008), (8, 3903755), (10, 3123004), (20, 1561502), (40, 780751), (43, 726280), (67, 466120), (86, 363140), (134, 233060), (172, 181570), (215, 145256), (268, 116530), (271, 115240), (335, 93224), (344, 90785), (430, 72628), (536, 58265), (542, 57620), (670, 46612), (860, 36314), (1084, 28810), (1340, 23306), (1355, 23048), (1720, 18157), (2168, 14405), (2680, 11653), (2710, 11524), (2881, 10840), (5420, 5762)]