209730820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{806657}}^1$

素因数の和:806679

約数の個数: 24

約数和(自身を含む): 474314904

約数和(自身を除く): 264584084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 806657, 1613314, 3226628, 4033285, 8066570, 10486541, 16133140, 20973082, 41946164, 52432705, 104865410, 209730820]

約数ペア:

[(1, 209730820), (2, 104865410), (4, 52432705), (5, 41946164), (10, 20973082), (13, 16133140), (20, 10486541), (26, 8066570), (52, 4033285), (65, 3226628), (130, 1613314), (260, 806657)]