51200840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 120130560

約数和(自身を除く): 68929720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 157, 248, 263, 310, 314, 526, 620, 628, 785, 1052, 1240, 1256, 1315, 1570, 2104, 2630, 3140, 4867, 5260, 6280, 8153, 9734, 10520, 16306, 19468, 24335, 32612, 38936, 40765, 41291, 48670, 65224, 81530, 82582, 97340, 163060, 165164, 194680, 206455, 326120, 330328, 412910, 825820, 1280021, 1651640, 2560042, 5120084, 6400105, 10240168, 12800210, 25600420, 51200840]

約数ペア:

[(1, 51200840), (2, 25600420), (4, 12800210), (5, 10240168), (8, 6400105), (10, 5120084), (20, 2560042), (31, 1651640), (40, 1280021), (62, 825820), (124, 412910), (155, 330328), (157, 326120), (248, 206455), (263, 194680), (310, 165164), (314, 163060), (526, 97340), (620, 82582), (628, 81530), (785, 65224), (1052, 48670), (1240, 41291), (1256, 40765), (1315, 38936), (1570, 32612), (2104, 24335), (2630, 19468), (3140, 16306), (4867, 10520), (5260, 9734), (6280, 8153)]