21692853

素因数分解:

$3^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 40409600

約数和(自身を除く): 18716747

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 109, 117, 189, 243, 273, 327, 351, 567, 729, 763, 819, 981, 1053, 1417, 1701, 2187, 2289, 2457, 2943, 3159, 4251, 5103, 6867, 7371, 8829, 9477, 9919, 12753, 15309, 20601, 22113, 26487, 28431, 29757, 38259, 61803, 66339, 79461, 89271, 114777, 185409, 199017, 238383, 267813, 344331, 556227, 803439, 1032993, 1668681, 2410317, 3098979, 7230951, 21692853]

約数ペア:

[(1, 21692853), (3, 7230951), (7, 3098979), (9, 2410317), (13, 1668681), (21, 1032993), (27, 803439), (39, 556227), (63, 344331), (81, 267813), (91, 238383), (109, 199017), (117, 185409), (189, 114777), (243, 89271), (273, 79461), (327, 66339), (351, 61803), (567, 38259), (729, 29757), (763, 28431), (819, 26487), (981, 22113), (1053, 20601), (1417, 15309), (1701, 12753), (2187, 9919), (2289, 9477), (2457, 8829), (2943, 7371), (3159, 6867), (4251, 5103)]