18783080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 25246360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 97, 103, 188, 194, 206, 235, 376, 388, 412, 470, 485, 515, 776, 824, 940, 970, 1030, 1880, 1940, 2060, 3880, 4120, 4559, 4841, 9118, 9682, 9991, 18236, 19364, 19982, 22795, 24205, 36472, 38728, 39964, 45590, 48410, 49955, 79928, 91180, 96820, 99910, 182360, 193640, 199820, 399640, 469577, 939154, 1878308, 2347885, 3756616, 4695770, 9391540, 18783080]

約数ペア:

[(1, 18783080), (2, 9391540), (4, 4695770), (5, 3756616), (8, 2347885), (10, 1878308), (20, 939154), (40, 469577), (47, 399640), (94, 199820), (97, 193640), (103, 182360), (188, 99910), (194, 96820), (206, 91180), (235, 79928), (376, 49955), (388, 48410), (412, 45590), (470, 39964), (485, 38728), (515, 36472), (776, 24205), (824, 22795), (940, 19982), (970, 19364), (1030, 18236), (1880, 9991), (1940, 9682), (2060, 9118), (3880, 4841), (4120, 4559)]