18283940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 40061952

約数和(自身を除く): 21778012

約数列:

[1, 2, 4, 5, 10, 20, 47, 53, 94, 106, 188, 212, 235, 265, 367, 470, 530, 734, 940, 1060, 1468, 1835, 2491, 3670, 4982, 7340, 9964, 12455, 17249, 19451, 24910, 34498, 38902, 49820, 68996, 77804, 86245, 97255, 172490, 194510, 344980, 389020, 914197, 1828394, 3656788, 4570985, 9141970, 18283940]

約数ペア:

[(1, 18283940), (2, 9141970), (4, 4570985), (5, 3656788), (10, 1828394), (20, 914197), (47, 389020), (53, 344980), (94, 194510), (106, 172490), (188, 97255), (212, 86245), (235, 77804), (265, 68996), (367, 49820), (470, 38902), (530, 34498), (734, 24910), (940, 19451), (1060, 17249), (1468, 12455), (1835, 9964), (2491, 7340), (3670, 4982)]