279020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1993}}^1$

素因数の和:2009

約数の個数: 24

約数和(自身を含む): 669984

約数和(自身を除く): 390964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1993, 3986, 7972, 9965, 13951, 19930, 27902, 39860, 55804, 69755, 139510, 279020]

約数ペア:

[(1, 279020), (2, 139510), (4, 69755), (5, 55804), (7, 39860), (10, 27902), (14, 19930), (20, 13951), (28, 9965), (35, 7972), (70, 3986), (140, 1993)]