21134631

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:113

約数の個数: 64

約数和(自身を含む): 36864000

約数和(自身を除く): 15729369

約数列:

[1, 3, 7, 19, 21, 23, 47, 49, 57, 69, 133, 141, 147, 161, 329, 343, 399, 437, 483, 893, 931, 987, 1029, 1081, 1127, 1311, 2303, 2679, 2793, 3059, 3243, 3381, 6251, 6517, 6909, 7567, 7889, 9177, 16121, 18753, 19551, 20539, 21413, 22701, 23667, 43757, 48363, 52969, 61617, 64239, 131271, 143773, 149891, 158907, 306299, 370783, 431319, 449673, 918897, 1006411, 1112349, 3019233, 7044877, 21134631]

約数ペア:

[(1, 21134631), (3, 7044877), (7, 3019233), (19, 1112349), (21, 1006411), (23, 918897), (47, 449673), (49, 431319), (57, 370783), (69, 306299), (133, 158907), (141, 149891), (147, 143773), (161, 131271), (329, 64239), (343, 61617), (399, 52969), (437, 48363), (483, 43757), (893, 23667), (931, 22701), (987, 21413), (1029, 20539), (1081, 19551), (1127, 18753), (1311, 16121), (2303, 9177), (2679, 7889), (2793, 7567), (3059, 6909), (3243, 6517), (3381, 6251)]