9780129820

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1477361}}^1$

素因数の和:1477701

約数の個数: 24

約数和(自身を含む): 20600335728

約数和(自身を除く): 10820205908

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 1477361, 2954722, 5909444, 7386805, 14773610, 29547220, 489006491, 978012982, 1956025964, 2445032455, 4890064910, 9780129820]

約数ペア:

[(1, 9780129820), (2, 4890064910), (4, 2445032455), (5, 1956025964), (10, 978012982), (20, 489006491), (331, 29547220), (662, 14773610), (1324, 7386805), (1655, 5909444), (3310, 2954722), (6620, 1477361)]