18686260

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 40674816

約数和(自身を除く): 21988556

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 103, 188, 193, 206, 235, 386, 412, 470, 515, 772, 940, 965, 1030, 1930, 2060, 3860, 4841, 9071, 9682, 18142, 19364, 19879, 24205, 36284, 39758, 45355, 48410, 79516, 90710, 96820, 99395, 181420, 198790, 397580, 934313, 1868626, 3737252, 4671565, 9343130, 18686260]

約数ペア:

[(1, 18686260), (2, 9343130), (4, 4671565), (5, 3737252), (10, 1868626), (20, 934313), (47, 397580), (94, 198790), (103, 181420), (188, 99395), (193, 96820), (206, 90710), (235, 79516), (386, 48410), (412, 45355), (470, 39758), (515, 36284), (772, 24205), (940, 19879), (965, 19364), (1030, 18142), (1930, 9682), (2060, 9071), (3860, 4841)]