20538392

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 47040000

約数和(自身を除く): 26501608

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 97, 133, 152, 194, 199, 266, 388, 398, 532, 679, 776, 796, 1064, 1358, 1393, 1592, 1843, 2716, 2786, 3686, 3781, 5432, 5572, 7372, 7562, 11144, 12901, 14744, 15124, 19303, 25802, 26467, 30248, 38606, 51604, 52934, 77212, 103208, 105868, 135121, 154424, 211736, 270242, 366757, 540484, 733514, 1080968, 1467028, 2567299, 2934056, 5134598, 10269196, 20538392]

約数ペア:

[(1, 20538392), (2, 10269196), (4, 5134598), (7, 2934056), (8, 2567299), (14, 1467028), (19, 1080968), (28, 733514), (38, 540484), (56, 366757), (76, 270242), (97, 211736), (133, 154424), (152, 135121), (194, 105868), (199, 103208), (266, 77212), (388, 52934), (398, 51604), (532, 38606), (679, 30248), (776, 26467), (796, 25802), (1064, 19303), (1358, 15124), (1393, 14744), (1592, 12901), (1843, 11144), (2716, 7562), (2786, 7372), (3686, 5572), (3781, 5432)]