21680784

素因数分解:

$2^4\times 3^4\times {\mathrm{16729}}^1$

素因数の和:16749

約数の個数: 50

約数和(自身を含む): 62754230

約数和(自身を除く): 41073446

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 324, 432, 648, 1296, 16729, 33458, 50187, 66916, 100374, 133832, 150561, 200748, 267664, 301122, 401496, 451683, 602244, 802992, 903366, 1204488, 1355049, 1806732, 2408976, 2710098, 3613464, 5420196, 7226928, 10840392, 21680784]

約数ペア:

[(1, 21680784), (2, 10840392), (3, 7226928), (4, 5420196), (6, 3613464), (8, 2710098), (9, 2408976), (12, 1806732), (16, 1355049), (18, 1204488), (24, 903366), (27, 802992), (36, 602244), (48, 451683), (54, 401496), (72, 301122), (81, 267664), (108, 200748), (144, 150561), (162, 133832), (216, 100374), (324, 66916), (432, 50187), (648, 33458), (1296, 16729)]