20559957

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 31856640

約数和(自身を除く): 11296683

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 271, 363, 627, 813, 1331, 2299, 2981, 3993, 5149, 6897, 8943, 15447, 25289, 32791, 56639, 75867, 98373, 169917, 360701, 623029, 1082103, 1869087, 6853319, 20559957]

約数ペア:

[(1, 20559957), (3, 6853319), (11, 1869087), (19, 1082103), (33, 623029), (57, 360701), (121, 169917), (209, 98373), (271, 75867), (363, 56639), (627, 32791), (813, 25289), (1331, 15447), (2299, 8943), (2981, 6897), (3993, 5149)]