21665640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{180547}}^1$

素因数の和:180561

約数の個数: 32

約数和(自身を含む): 64997280

約数和(自身を除く): 43331640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 180547, 361094, 541641, 722188, 902735, 1083282, 1444376, 1805470, 2166564, 2708205, 3610940, 4333128, 5416410, 7221880, 10832820, 21665640]

約数ペア:

[(1, 21665640), (2, 10832820), (3, 7221880), (4, 5416410), (5, 4333128), (6, 3610940), (8, 2708205), (10, 2166564), (12, 1805470), (15, 1444376), (20, 1083282), (24, 902735), (30, 722188), (40, 541641), (60, 361094), (120, 180547)]