78836420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303217}}^1$

素因数の和:303239

約数の個数: 24

約数和(自身を含む): 178292184

約数和(自身を除く): 99455764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303217, 606434, 1212868, 1516085, 3032170, 3941821, 6064340, 7883642, 15767284, 19709105, 39418210, 78836420]

約数ペア:

[(1, 78836420), (2, 39418210), (4, 19709105), (5, 15767284), (10, 7883642), (13, 6064340), (20, 3941821), (26, 3032170), (52, 1516085), (65, 1212868), (130, 606434), (260, 303217)]