20179901

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 26085888

約数和(自身を除く): 5905987

約数列:

[1, 7, 17, 23, 73, 101, 119, 161, 391, 511, 707, 1241, 1679, 1717, 2323, 2737, 7373, 8687, 11753, 12019, 16261, 28543, 39491, 51611, 125341, 169579, 199801, 276437, 877387, 1187053, 2882843, 20179901]

約数ペア:

[(1, 20179901), (7, 2882843), (17, 1187053), (23, 877387), (73, 276437), (101, 199801), (119, 169579), (161, 125341), (391, 51611), (511, 39491), (707, 28543), (1241, 16261), (1679, 12019), (1717, 11753), (2323, 8687), (2737, 7373)]