20958008

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{2111}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 42197760

約数和(自身を除く): 21239752

約数列:

[1, 2, 4, 8, 17, 34, 68, 73, 136, 146, 292, 584, 1241, 2111, 2482, 4222, 4964, 8444, 9928, 16888, 35887, 71774, 143548, 154103, 287096, 308206, 616412, 1232824, 2619751, 5239502, 10479004, 20958008]

約数ペア:

[(1, 20958008), (2, 10479004), (4, 5239502), (8, 2619751), (17, 1232824), (34, 616412), (68, 308206), (73, 287096), (136, 154103), (146, 143548), (292, 71774), (584, 35887), (1241, 16888), (2111, 9928), (2482, 8444), (4222, 4964)]