20168732

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:350

約数の個数: 36

約数和(自身を含む): 38166240

約数和(自身を除く): 17997508

約数列:

[1, 2, 4, 17, 34, 68, 73, 146, 239, 289, 292, 478, 578, 956, 1156, 1241, 2482, 4063, 4964, 8126, 16252, 17447, 21097, 34894, 42194, 69071, 69788, 84388, 138142, 276284, 296599, 593198, 1186396, 5042183, 10084366, 20168732]

約数ペア:

[(1, 20168732), (2, 10084366), (4, 5042183), (17, 1186396), (34, 593198), (68, 296599), (73, 276284), (146, 138142), (239, 84388), (289, 69788), (292, 69071), (478, 42194), (578, 34894), (956, 21097), (1156, 17447), (1241, 16252), (2482, 8126), (4063, 4964)]