21609550

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{25423}}^1$

素因数の和:25452

約数の個数: 24

約数和(自身を含む): 42559776

約数和(自身を除く): 20950226

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850, 25423, 50846, 127115, 254230, 432191, 635575, 864382, 1271150, 2160955, 4321910, 10804775, 21609550]

約数ペア:

[(1, 21609550), (2, 10804775), (5, 4321910), (10, 2160955), (17, 1271150), (25, 864382), (34, 635575), (50, 432191), (85, 254230), (170, 127115), (425, 50846), (850, 25423)]