81346275

素因数分解:

$3^4\times 5^2\times {\mathrm{17}}^2\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 90

約数和(自身を含む): 161217980

約数和(自身を除く): 79871705

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 139, 153, 225, 255, 289, 405, 417, 425, 459, 675, 695, 765, 867, 1251, 1275, 1377, 1445, 2025, 2085, 2295, 2363, 2601, 3475, 3753, 3825, 4335, 6255, 6885, 7089, 7225, 7803, 10425, 11259, 11475, 11815, 13005, 18765, 21267, 21675, 23409, 31275, 34425, 35445, 39015, 40171, 56295, 59075, 63801, 65025, 93825, 106335, 117045, 120513, 177225, 191403, 195075, 200855, 281475, 319005, 361539, 531675, 585225, 602565, 957015, 1004275, 1084617, 1595025, 1807695, 3012825, 3253851, 4785075, 5423085, 9038475, 16269255, 27115425, 81346275]

約数ペア:

[(1, 81346275), (3, 27115425), (5, 16269255), (9, 9038475), (15, 5423085), (17, 4785075), (25, 3253851), (27, 3012825), (45, 1807695), (51, 1595025), (75, 1084617), (81, 1004275), (85, 957015), (135, 602565), (139, 585225), (153, 531675), (225, 361539), (255, 319005), (289, 281475), (405, 200855), (417, 195075), (425, 191403), (459, 177225), (675, 120513), (695, 117045), (765, 106335), (867, 93825), (1251, 65025), (1275, 63801), (1377, 59075), (1445, 56295), (2025, 40171), (2085, 39015), (2295, 35445), (2363, 34425), (2601, 31275), (3475, 23409), (3753, 21675), (3825, 21267), (4335, 18765), (6255, 13005), (6885, 11815), (7089, 11475), (7225, 11259), (7803, 10425)]