67408520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{39191}}^1$

素因数の和:39245

約数の個数: 32

約数和(自身を含む): 155200320

約数和(自身を除く): 87791800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 39191, 78382, 156764, 195955, 313528, 391910, 783820, 1567640, 1685213, 3370426, 6740852, 8426065, 13481704, 16852130, 33704260, 67408520]

約数ペア:

[(1, 67408520), (2, 33704260), (4, 16852130), (5, 13481704), (8, 8426065), (10, 6740852), (20, 3370426), (40, 1685213), (43, 1567640), (86, 783820), (172, 391910), (215, 313528), (344, 195955), (430, 156764), (860, 78382), (1720, 39191)]