81680290

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{12703}}^1$

素因数の和:13353

約数の個数: 16

約数和(自身を含む): 147264768

約数和(自身を除く): 65584478

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 6430, 12703, 25406, 63515, 127030, 8168029, 16336058, 40840145, 81680290]

約数ペア:

[(1, 81680290), (2, 40840145), (5, 16336058), (10, 8168029), (643, 127030), (1286, 63515), (3215, 25406), (6430, 12703)]