81418415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 109057536

約数和(自身を除く): 27639121

約数列:

[1, 5, 13, 41, 65, 137, 205, 223, 533, 685, 1115, 1781, 2665, 2899, 5617, 8905, 9143, 14495, 28085, 30551, 45715, 73021, 118859, 152755, 365105, 397163, 594295, 1252591, 1985815, 6262955, 16283683, 81418415]

約数ペア:

[(1, 81418415), (5, 16283683), (13, 6262955), (41, 1985815), (65, 1252591), (137, 594295), (205, 397163), (223, 365105), (533, 152755), (685, 118859), (1115, 73021), (1781, 45715), (2665, 30551), (2899, 28085), (5617, 14495), (8905, 9143)]