647567420

素因数分解:

$2^2\times 5^1\times {\mathrm{2341}}^1\times {\mathrm{13831}}^1$

素因数の和:16181

約数の個数: 24

約数和(自身を含む): 1360570848

約数和(自身を除く): 713003428

約数列:

[1, 2, 4, 5, 10, 20, 2341, 4682, 9364, 11705, 13831, 23410, 27662, 46820, 55324, 69155, 138310, 276620, 32378371, 64756742, 129513484, 161891855, 323783710, 647567420]

約数ペア:

[(1, 647567420), (2, 323783710), (4, 161891855), (5, 129513484), (10, 64756742), (20, 32378371), (2341, 276620), (4682, 138310), (9364, 69155), (11705, 55324), (13831, 46820), (23410, 27662)]