81973060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{315281}}^1$

素因数の和:315303

約数の個数: 24

約数和(自身を含む): 185385816

約数和(自身を除く): 103412756

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 315281, 630562, 1261124, 1576405, 3152810, 4098653, 6305620, 8197306, 16394612, 20493265, 40986530, 81973060]

約数ペア:

[(1, 81973060), (2, 40986530), (4, 20493265), (5, 16394612), (10, 8197306), (13, 6305620), (20, 4098653), (26, 3152810), (52, 1576405), (65, 1261124), (130, 630562), (260, 315281)]