20809785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1033}}^1$

素因数の和:1137

約数の個数: 32

約数和(自身を含む): 35735040

約数和(自身を除く): 14925255

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1033, 1185, 1343, 3099, 4029, 5165, 6715, 15495, 17561, 20145, 52683, 81607, 87805, 244821, 263415, 408035, 1224105, 1387319, 4161957, 6936595, 20809785]

約数ペア:

[(1, 20809785), (3, 6936595), (5, 4161957), (15, 1387319), (17, 1224105), (51, 408035), (79, 263415), (85, 244821), (237, 87805), (255, 81607), (395, 52683), (1033, 20145), (1185, 17561), (1343, 15495), (3099, 6715), (4029, 5165)]