78688220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{302647}}^1$

素因数の和:302669

約数の個数: 24

約数和(自身を含む): 177957024

約数和(自身を除く): 99268804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 302647, 605294, 1210588, 1513235, 3026470, 3934411, 6052940, 7868822, 15737644, 19672055, 39344110, 78688220]

約数ペア:

[(1, 78688220), (2, 39344110), (4, 19672055), (5, 15737644), (10, 7868822), (13, 6052940), (20, 3934411), (26, 3026470), (52, 1513235), (65, 1210588), (130, 605294), (260, 302647)]