21668415

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{347}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 36481536

約数和(自身を除く): 14813121

約数列:

[1, 3, 5, 15, 23, 69, 115, 181, 345, 347, 543, 905, 1041, 1735, 2715, 4163, 5205, 7981, 12489, 20815, 23943, 39905, 62445, 62807, 119715, 188421, 314035, 942105, 1444561, 4333683, 7222805, 21668415]

約数ペア:

[(1, 21668415), (3, 7222805), (5, 4333683), (15, 1444561), (23, 942105), (69, 314035), (115, 188421), (181, 119715), (345, 62807), (347, 62445), (543, 39905), (905, 23943), (1041, 20815), (1735, 12489), (2715, 7981), (4163, 5205)]