21994120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11699}}^1$

素因数の和:11757

約数の個数: 32

約数和(自身を含む): 50544000

約数和(自身を除く): 28549880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11699, 23398, 46796, 58495, 93592, 116990, 233980, 467960, 549853, 1099706, 2199412, 2749265, 4398824, 5498530, 10997060, 21994120]

約数ペア:

[(1, 21994120), (2, 10997060), (4, 5498530), (5, 4398824), (8, 2749265), (10, 2199412), (20, 1099706), (40, 549853), (47, 467960), (94, 233980), (188, 116990), (235, 93592), (376, 58495), (470, 46796), (940, 23398), (1880, 11699)]