18358205

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{829}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 22788480

約数和(自身を除く): 4430275

約数列:

[1, 5, 43, 103, 215, 515, 829, 4145, 4429, 22145, 35647, 85387, 178235, 426935, 3671641, 18358205]

約数ペア:

[(1, 18358205), (5, 3671641), (43, 426935), (103, 178235), (215, 85387), (515, 35647), (829, 22145), (4145, 4429)]