8420680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1607}}^1$

素因数の和:1749

約数の個数: 32

約数和(自身を含む): 19103040

約数和(自身を除く): 10682360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 1607, 2620, 3214, 5240, 6428, 8035, 12856, 16070, 32140, 64280, 210517, 421034, 842068, 1052585, 1684136, 2105170, 4210340, 8420680]

約数ペア:

[(1, 8420680), (2, 4210340), (4, 2105170), (5, 1684136), (8, 1052585), (10, 842068), (20, 421034), (40, 210517), (131, 64280), (262, 32140), (524, 16070), (655, 12856), (1048, 8035), (1310, 6428), (1607, 5240), (2620, 3214)]