21948785

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 7703695

約数列:

[1, 5, 17, 23, 85, 103, 109, 115, 391, 515, 545, 1751, 1853, 1955, 2369, 2507, 8755, 9265, 11227, 11845, 12535, 40273, 42619, 56135, 190859, 201365, 213095, 258221, 954295, 1291105, 4389757, 21948785]

約数ペア:

[(1, 21948785), (5, 4389757), (17, 1291105), (23, 954295), (85, 258221), (103, 213095), (109, 201365), (115, 190859), (391, 56135), (515, 42619), (545, 40273), (1751, 12535), (1853, 11845), (1955, 11227), (2369, 9265), (2507, 8755)]