19817648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72859}}^1$

素因数の和:72884

約数の個数: 20

約数和(自身を含む): 40655880

約数和(自身を除く): 20838232

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72859, 145718, 291436, 582872, 1165744, 1238603, 2477206, 4954412, 9908824, 19817648]

約数ペア:

[(1, 19817648), (2, 9908824), (4, 4954412), (8, 2477206), (16, 1238603), (17, 1165744), (34, 582872), (68, 291436), (136, 145718), (272, 72859)]