21470541

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^2\times {\mathrm{79}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 31121280

約数和(自身を除く): 9650739

約数列:

[1, 3, 17, 51, 73, 79, 219, 237, 1241, 1343, 3723, 4029, 5329, 5767, 15987, 17301, 90593, 98039, 271779, 294117, 420991, 1262973, 7156847, 21470541]

約数ペア:

[(1, 21470541), (3, 7156847), (17, 1262973), (51, 420991), (73, 294117), (79, 271779), (219, 98039), (237, 90593), (1241, 17301), (1343, 15987), (3723, 5767), (4029, 5329)]