18545260

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 21815060

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 109, 181, 188, 218, 235, 362, 436, 470, 545, 724, 905, 940, 1090, 1810, 2180, 3620, 5123, 8507, 10246, 17014, 19729, 20492, 25615, 34028, 39458, 42535, 51230, 78916, 85070, 98645, 102460, 170140, 197290, 394580, 927263, 1854526, 3709052, 4636315, 9272630, 18545260]

約数ペア:

[(1, 18545260), (2, 9272630), (4, 4636315), (5, 3709052), (10, 1854526), (20, 927263), (47, 394580), (94, 197290), (109, 170140), (181, 102460), (188, 98645), (218, 85070), (235, 78916), (362, 51230), (436, 42535), (470, 39458), (545, 34028), (724, 25615), (905, 20492), (940, 19729), (1090, 17014), (1810, 10246), (2180, 8507), (3620, 5123)]