18872301

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 32011200

約数和(自身を除く): 13138899

約数列:

[1, 3, 7, 19, 21, 29, 49, 57, 87, 133, 147, 203, 233, 399, 551, 609, 699, 931, 1421, 1631, 1653, 2793, 3857, 4263, 4427, 4893, 6757, 11417, 11571, 13281, 20271, 26999, 30989, 34251, 47299, 80997, 92967, 128383, 141897, 216923, 331093, 385149, 650769, 898681, 993279, 2696043, 6290767, 18872301]

約数ペア:

[(1, 18872301), (3, 6290767), (7, 2696043), (19, 993279), (21, 898681), (29, 650769), (49, 385149), (57, 331093), (87, 216923), (133, 141897), (147, 128383), (203, 92967), (233, 80997), (399, 47299), (551, 34251), (609, 30989), (699, 26999), (931, 20271), (1421, 13281), (1631, 11571), (1653, 11417), (2793, 6757), (3857, 4893), (4263, 4427)]