21147670

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72923}}^1$

素因数の和:72959

約数の個数: 16

約数和(自身を含む): 39378960

約数和(自身を除く): 18231290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72923, 145846, 364615, 729230, 2114767, 4229534, 10573835, 21147670]

約数ペア:

[(1, 21147670), (2, 10573835), (5, 4229534), (10, 2114767), (29, 729230), (58, 364615), (145, 145846), (290, 72923)]