18238195

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:555

約数の個数: 32

約数和(自身を含む): 25505280

約数和(自身を除く): 7267085

約数列:

[1, 5, 17, 19, 23, 85, 95, 115, 323, 391, 437, 491, 1615, 1955, 2185, 2455, 7429, 8347, 9329, 11293, 37145, 41735, 46645, 56465, 158593, 191981, 214567, 792965, 959905, 1072835, 3647639, 18238195]

約数ペア:

[(1, 18238195), (5, 3647639), (17, 1072835), (19, 959905), (23, 792965), (85, 214567), (95, 191981), (115, 158593), (323, 56465), (391, 46645), (437, 41735), (491, 37145), (1615, 11293), (1955, 9329), (2185, 8347), (2455, 7429)]