18397678

素因数分解:

$2^1\times {\mathrm{13}}^3\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 12447122

約数列:

[1, 2, 13, 26, 53, 79, 106, 158, 169, 338, 689, 1027, 1378, 2054, 2197, 4187, 4394, 8374, 8957, 13351, 17914, 26702, 54431, 108862, 116441, 173563, 232882, 347126, 707603, 1415206, 9198839, 18397678]

約数ペア:

[(1, 18397678), (2, 9198839), (13, 1415206), (26, 707603), (53, 347126), (79, 232882), (106, 173563), (158, 116441), (169, 108862), (338, 54431), (689, 26702), (1027, 17914), (1378, 13351), (2054, 8957), (2197, 8374), (4187, 4394)]