20790813

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 30748032

約数和(自身を除く): 9957219

約数列:

[1, 3, 17, 41, 51, 61, 123, 163, 183, 489, 697, 1037, 2091, 2501, 2771, 3111, 6683, 7503, 8313, 9943, 20049, 29829, 42517, 113611, 127551, 169031, 340833, 407663, 507093, 1222989, 6930271, 20790813]

約数ペア:

[(1, 20790813), (3, 6930271), (17, 1222989), (41, 507093), (51, 407663), (61, 340833), (123, 169031), (163, 127551), (183, 113611), (489, 42517), (697, 29829), (1037, 20049), (2091, 9943), (2501, 8313), (2771, 7503), (3111, 6683)]