8757140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 21337344

約数和(自身を除く): 12580204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 881, 994, 1420, 1762, 1988, 2485, 3524, 4405, 4970, 6167, 8810, 9940, 12334, 17620, 24668, 30835, 61670, 62551, 123340, 125102, 250204, 312755, 437857, 625510, 875714, 1251020, 1751428, 2189285, 4378570, 8757140]

約数ペア:

[(1, 8757140), (2, 4378570), (4, 2189285), (5, 1751428), (7, 1251020), (10, 875714), (14, 625510), (20, 437857), (28, 312755), (35, 250204), (70, 125102), (71, 123340), (140, 62551), (142, 61670), (284, 30835), (355, 24668), (497, 17620), (710, 12334), (881, 9940), (994, 8810), (1420, 6167), (1762, 4970), (1988, 4405), (2485, 3524)]