860625

素因数分解:

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

素因数の和:49

約数の個数: 50

約数和(自身を含む): 1701018

約数和(自身を除く): 840393

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 125, 135, 153, 225, 255, 375, 405, 425, 459, 625, 675, 765, 1125, 1275, 1377, 1875, 2025, 2125, 2295, 3375, 3825, 5625, 6375, 6885, 10125, 10625, 11475, 16875, 19125, 31875, 34425, 50625, 57375, 95625, 172125, 286875, 860625]

約数ペア:

[(1, 860625), (3, 286875), (5, 172125), (9, 95625), (15, 57375), (17, 50625), (25, 34425), (27, 31875), (45, 19125), (51, 16875), (75, 11475), (81, 10625), (85, 10125), (125, 6885), (135, 6375), (153, 5625), (225, 3825), (255, 3375), (375, 2295), (405, 2125), (425, 2025), (459, 1875), (625, 1377), (675, 1275), (765, 1125)]