20316825

素因数分解:

$3^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 60

約数和(自身を含む): 38410240

約数和(自身を除く): 18093415

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 79, 81, 127, 135, 225, 237, 381, 395, 405, 635, 675, 711, 1143, 1185, 1905, 1975, 2025, 2133, 3175, 3429, 3555, 5715, 5925, 6399, 9525, 10033, 10287, 10665, 17145, 17775, 28575, 30099, 31995, 50165, 51435, 53325, 85725, 90297, 150495, 159975, 250825, 257175, 270891, 451485, 752475, 812673, 1354455, 2257425, 4063365, 6772275, 20316825]

約数ペア:

[(1, 20316825), (3, 6772275), (5, 4063365), (9, 2257425), (15, 1354455), (25, 812673), (27, 752475), (45, 451485), (75, 270891), (79, 257175), (81, 250825), (127, 159975), (135, 150495), (225, 90297), (237, 85725), (381, 53325), (395, 51435), (405, 50165), (635, 31995), (675, 30099), (711, 28575), (1143, 17775), (1185, 17145), (1905, 10665), (1975, 10287), (2025, 10033), (2133, 9525), (3175, 6399), (3429, 5925), (3555, 5715)]