21499510

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:468

約数の個数: 32

約数和(自身を含む): 39750912

約数和(自身を除く): 18251402

約数列:

[1, 2, 5, 10, 71, 107, 142, 214, 283, 355, 535, 566, 710, 1070, 1415, 2830, 7597, 15194, 20093, 30281, 37985, 40186, 60562, 75970, 100465, 151405, 200930, 302810, 2149951, 4299902, 10749755, 21499510]

約数ペア:

[(1, 21499510), (2, 10749755), (5, 4299902), (10, 2149951), (71, 302810), (107, 200930), (142, 151405), (214, 100465), (283, 75970), (355, 60562), (535, 40186), (566, 37985), (710, 30281), (1070, 20093), (1415, 15194), (2830, 7597)]