72587440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21101}}^1$

素因数の和:21157

約数の個数: 40

約数和(自身を含む): 172698768

約数和(自身を除く): 100111328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 21101, 42202, 84404, 105505, 168808, 211010, 337616, 422020, 844040, 907343, 1688080, 1814686, 3629372, 4536715, 7258744, 9073430, 14517488, 18146860, 36293720, 72587440]

約数ペア:

[(1, 72587440), (2, 36293720), (4, 18146860), (5, 14517488), (8, 9073430), (10, 7258744), (16, 4536715), (20, 3629372), (40, 1814686), (43, 1688080), (80, 907343), (86, 844040), (172, 422020), (215, 337616), (344, 211010), (430, 168808), (688, 105505), (860, 84404), (1720, 42202), (3440, 21101)]