68043820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{261707}}^1$

素因数の和:261729

約数の個数: 24

約数和(自身を含む): 153884304

約数和(自身を除く): 85840484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 261707, 523414, 1046828, 1308535, 2617070, 3402191, 5234140, 6804382, 13608764, 17010955, 34021910, 68043820]

約数ペア:

[(1, 68043820), (2, 34021910), (4, 17010955), (5, 13608764), (10, 6804382), (13, 5234140), (20, 3402191), (26, 2617070), (52, 1308535), (65, 1046828), (130, 523414), (260, 261707)]