21092360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12263}}^1$

素因数の和:12317

約数の個数: 32

約数和(自身を含む): 48565440

約数和(自身を除く): 27473080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12263, 24526, 49052, 61315, 98104, 122630, 245260, 490520, 527309, 1054618, 2109236, 2636545, 4218472, 5273090, 10546180, 21092360]

約数ペア:

[(1, 21092360), (2, 10546180), (4, 5273090), (5, 4218472), (8, 2636545), (10, 2109236), (20, 1054618), (40, 527309), (43, 490520), (86, 245260), (172, 122630), (215, 98104), (344, 61315), (430, 49052), (860, 24526), (1720, 12263)]