28018705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 11898095

約数列:

[1, 5, 11, 13, 55, 65, 143, 149, 263, 715, 745, 1315, 1639, 1937, 2893, 3419, 8195, 9685, 14465, 17095, 21307, 37609, 39187, 106535, 188045, 195935, 431057, 509431, 2155285, 2547155, 5603741, 28018705]

約数ペア:

[(1, 28018705), (5, 5603741), (11, 2547155), (13, 2155285), (55, 509431), (65, 431057), (143, 195935), (149, 188045), (263, 106535), (715, 39187), (745, 37609), (1315, 21307), (1639, 17095), (1937, 14465), (2893, 9685), (3419, 8195)]