18358816

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 23977184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 82, 112, 164, 224, 287, 328, 574, 656, 1148, 1312, 1999, 2296, 3998, 4592, 7996, 9184, 13993, 15992, 27986, 31984, 55972, 63968, 81959, 111944, 163918, 223888, 327836, 447776, 573713, 655672, 1147426, 1311344, 2294852, 2622688, 4589704, 9179408, 18358816]

約数ペア:

[(1, 18358816), (2, 9179408), (4, 4589704), (7, 2622688), (8, 2294852), (14, 1311344), (16, 1147426), (28, 655672), (32, 573713), (41, 447776), (56, 327836), (82, 223888), (112, 163918), (164, 111944), (224, 81959), (287, 63968), (328, 55972), (574, 31984), (656, 27986), (1148, 15992), (1312, 13993), (1999, 9184), (2296, 7996), (3998, 4592)]