12781015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 17740800

約数和(自身を除く): 4959785

約数列:

[1, 5, 13, 19, 65, 79, 95, 131, 247, 395, 655, 1027, 1235, 1501, 1703, 2489, 5135, 7505, 8515, 10349, 12445, 19513, 32357, 51745, 97565, 134537, 161785, 196631, 672685, 983155, 2556203, 12781015]

約数ペア:

[(1, 12781015), (5, 2556203), (13, 983155), (19, 672685), (65, 196631), (79, 161785), (95, 134537), (131, 97565), (247, 51745), (395, 32357), (655, 19513), (1027, 12445), (1235, 10349), (1501, 8515), (1703, 7505), (2489, 5135)]