18802040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 25987720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 107, 115, 184, 191, 214, 230, 382, 428, 460, 535, 764, 856, 920, 955, 1070, 1528, 1910, 2140, 2461, 3820, 4280, 4393, 4922, 7640, 8786, 9844, 12305, 17572, 19688, 20437, 21965, 24610, 35144, 40874, 43930, 49220, 81748, 87860, 98440, 102185, 163496, 175720, 204370, 408740, 470051, 817480, 940102, 1880204, 2350255, 3760408, 4700510, 9401020, 18802040]

約数ペア:

[(1, 18802040), (2, 9401020), (4, 4700510), (5, 3760408), (8, 2350255), (10, 1880204), (20, 940102), (23, 817480), (40, 470051), (46, 408740), (92, 204370), (107, 175720), (115, 163496), (184, 102185), (191, 98440), (214, 87860), (230, 81748), (382, 49220), (428, 43930), (460, 40874), (535, 35144), (764, 24610), (856, 21965), (920, 20437), (955, 19688), (1070, 17572), (1528, 12305), (1910, 9844), (2140, 8786), (2461, 7640), (3820, 4922), (4280, 4393)]