28710280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{42221}}^1$

素因数の和:42249

約数の個数: 32

約数和(自身を含む): 68399640

約数和(自身を除く): 39689360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 42221, 84442, 168884, 211105, 337768, 422210, 717757, 844420, 1435514, 1688840, 2871028, 3588785, 5742056, 7177570, 14355140, 28710280]

約数ペア:

[(1, 28710280), (2, 14355140), (4, 7177570), (5, 5742056), (8, 3588785), (10, 2871028), (17, 1688840), (20, 1435514), (34, 844420), (40, 717757), (68, 422210), (85, 337768), (136, 211105), (170, 168884), (340, 84442), (680, 42221)]