21365090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1153}}^1$

素因数の和:1286

約数の個数: 32

約数和(自身を含む): 41128560

約数和(自身を除く): 19763470

約数列:

[1, 2, 5, 10, 17, 34, 85, 109, 170, 218, 545, 1090, 1153, 1853, 2306, 3706, 5765, 9265, 11530, 18530, 19601, 39202, 98005, 125677, 196010, 251354, 628385, 1256770, 2136509, 4273018, 10682545, 21365090]

約数ペア:

[(1, 21365090), (2, 10682545), (5, 4273018), (10, 2136509), (17, 1256770), (34, 628385), (85, 251354), (109, 196010), (170, 125677), (218, 98005), (545, 39202), (1090, 19601), (1153, 18530), (1853, 11530), (2306, 9265), (3706, 5765)]