20188890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2221}}^1$

素因数の和:2335

約数の個数: 48

約数和(自身を含む): 53034696

約数和(自身を除く): 32845806

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 303, 505, 606, 909, 1010, 1515, 1818, 2221, 3030, 4442, 4545, 6663, 9090, 11105, 13326, 19989, 22210, 33315, 39978, 66630, 99945, 199890, 224321, 448642, 672963, 1121605, 1345926, 2018889, 2243210, 3364815, 4037778, 6729630, 10094445, 20188890]

約数ペア:

[(1, 20188890), (2, 10094445), (3, 6729630), (5, 4037778), (6, 3364815), (9, 2243210), (10, 2018889), (15, 1345926), (18, 1121605), (30, 672963), (45, 448642), (90, 224321), (101, 199890), (202, 99945), (303, 66630), (505, 39978), (606, 33315), (909, 22210), (1010, 19989), (1515, 13326), (1818, 11105), (2221, 9090), (3030, 6663), (4442, 4545)]