681584

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{1039}}^1$

素因数の和:1088

約数の個数: 20

約数和(自身を含む): 1354080

約数和(自身を除く): 672496

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 1039, 2078, 4156, 8312, 16624, 42599, 85198, 170396, 340792, 681584]

約数ペア:

[(1, 681584), (2, 340792), (4, 170396), (8, 85198), (16, 42599), (41, 16624), (82, 8312), (164, 4156), (328, 2078), (656, 1039)]