16789480

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{997}}^1$

素因数の和:1429

約数の個数: 32

約数和(自身を含む): 37904040

約数和(自身を除く): 21114560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 997, 1684, 1994, 2105, 3368, 3988, 4210, 4985, 7976, 8420, 9970, 16840, 19940, 39880, 419737, 839474, 1678948, 2098685, 3357896, 4197370, 8394740, 16789480]

約数ペア:

[(1, 16789480), (2, 8394740), (4, 4197370), (5, 3357896), (8, 2098685), (10, 1678948), (20, 839474), (40, 419737), (421, 39880), (842, 19940), (997, 16840), (1684, 9970), (1994, 8420), (2105, 7976), (3368, 4985), (3988, 4210)]