19990028

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{4027}}^1$

素因数の和:4121

約数の個数: 24

約数和(自身を含む): 37557072

約数和(自身を除く): 17567044

約数列:

[1, 2, 4, 17, 34, 68, 73, 146, 292, 1241, 2482, 4027, 4964, 8054, 16108, 68459, 136918, 273836, 293971, 587942, 1175884, 4997507, 9995014, 19990028]

約数ペア:

[(1, 19990028), (2, 9995014), (4, 4997507), (17, 1175884), (34, 587942), (68, 293971), (73, 273836), (146, 136918), (292, 68459), (1241, 16108), (2482, 8054), (4027, 4964)]