21581510

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{74419}}^1$

素因数の和:74455

約数の個数: 16

約数和(自身を含む): 40186800

約数和(自身を除く): 18605290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 74419, 148838, 372095, 744190, 2158151, 4316302, 10790755, 21581510]

約数ペア:

[(1, 21581510), (2, 10790755), (5, 4316302), (10, 2158151), (29, 744190), (58, 372095), (145, 148838), (290, 74419)]