20723661

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 38400000

約数和(自身を除く): 17676339

約数列:

[1, 3, 7, 9, 19, 21, 27, 29, 57, 63, 87, 133, 171, 189, 199, 203, 261, 399, 513, 551, 597, 609, 783, 1197, 1393, 1653, 1791, 1827, 3591, 3781, 3857, 4179, 4959, 5373, 5481, 5771, 11343, 11571, 12537, 14877, 17313, 26467, 34029, 34713, 37611, 40397, 51939, 79401, 102087, 104139, 109649, 121191, 155817, 238203, 328947, 363573, 714609, 767543, 986841, 1090719, 2302629, 2960523, 6907887, 20723661]

約数ペア:

[(1, 20723661), (3, 6907887), (7, 2960523), (9, 2302629), (19, 1090719), (21, 986841), (27, 767543), (29, 714609), (57, 363573), (63, 328947), (87, 238203), (133, 155817), (171, 121191), (189, 109649), (199, 104139), (203, 102087), (261, 79401), (399, 51939), (513, 40397), (551, 37611), (597, 34713), (609, 34029), (783, 26467), (1197, 17313), (1393, 14877), (1653, 12537), (1791, 11571), (1827, 11343), (3591, 5771), (3781, 5481), (3857, 5373), (4179, 4959)]