18695665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 25318656

約数和(自身を除く): 6622991

約数列:

[1, 5, 17, 23, 73, 85, 115, 131, 365, 391, 655, 1241, 1679, 1955, 2227, 3013, 6205, 8395, 9563, 11135, 15065, 28543, 47815, 51221, 142715, 162571, 219949, 256105, 812855, 1099745, 3739133, 18695665]

約数ペア:

[(1, 18695665), (5, 3739133), (17, 1099745), (23, 812855), (73, 256105), (85, 219949), (115, 162571), (131, 142715), (365, 51221), (391, 47815), (655, 28543), (1241, 15065), (1679, 11135), (1955, 9563), (2227, 8395), (3013, 6205)]