664816

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{1123}}^1$

素因数の和:1168

約数の個数: 20

約数和(自身を含む): 1324072

約数和(自身を除く): 659256

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 1123, 2246, 4492, 8984, 17968, 41551, 83102, 166204, 332408, 664816]

約数ペア:

[(1, 664816), (2, 332408), (4, 166204), (8, 83102), (16, 41551), (37, 17968), (74, 8984), (148, 4492), (296, 2246), (592, 1123)]