21690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{241}}^1$

素因数の和:254

約数の個数: 24

約数和(自身を含む): 56628

約数和(自身を除く): 34938

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 241, 482, 723, 1205, 1446, 2169, 2410, 3615, 4338, 7230, 10845, 21690]

約数ペア:

[(1, 21690), (2, 10845), (3, 7230), (5, 4338), (6, 3615), (9, 2410), (10, 2169), (15, 1446), (18, 1205), (30, 723), (45, 482), (90, 241)]