64650820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248657}}^1$

素因数の和:248679

約数の個数: 24

約数和(自身を含む): 146210904

約数和(自身を除く): 81560084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248657, 497314, 994628, 1243285, 2486570, 3232541, 4973140, 6465082, 12930164, 16162705, 32325410, 64650820]

約数ペア:

[(1, 64650820), (2, 32325410), (4, 16162705), (5, 12930164), (10, 6465082), (13, 4973140), (20, 3232541), (26, 2486570), (52, 1243285), (65, 994628), (130, 497314), (260, 248657)]