18208820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1151}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 25917388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1151, 1582, 2260, 2302, 3164, 3955, 4604, 5755, 7910, 8057, 11510, 15820, 16114, 23020, 32228, 40285, 80570, 130063, 161140, 260126, 520252, 650315, 910441, 1300630, 1820882, 2601260, 3641764, 4552205, 9104410, 18208820]

約数ペア:

[(1, 18208820), (2, 9104410), (4, 4552205), (5, 3641764), (7, 2601260), (10, 1820882), (14, 1300630), (20, 910441), (28, 650315), (35, 520252), (70, 260126), (113, 161140), (140, 130063), (226, 80570), (452, 40285), (565, 32228), (791, 23020), (1130, 16114), (1151, 15820), (1582, 11510), (2260, 8057), (2302, 7910), (3164, 5755), (3955, 4604)]