19940048

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{73309}}^1$

素因数の和:73334

約数の個数: 20

約数和(自身を含む): 40906980

約数和(自身を除く): 20966932

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 73309, 146618, 293236, 586472, 1172944, 1246253, 2492506, 4985012, 9970024, 19940048]

約数ペア:

[(1, 19940048), (2, 9970024), (4, 4985012), (8, 2492506), (16, 1246253), (17, 1172944), (34, 586472), (68, 293236), (136, 146618), (272, 73309)]