287782875

素因数分解:

$3^4\times 5^3\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:731

約数の個数: 80

約数和(自身を含む): 549820128

約数和(自身を除く): 262037253

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 81, 125, 129, 135, 215, 225, 375, 387, 405, 645, 661, 675, 1075, 1125, 1161, 1935, 1983, 2025, 3225, 3305, 3375, 3483, 5375, 5805, 5949, 9675, 9915, 10125, 16125, 16525, 17415, 17847, 28423, 29025, 29745, 48375, 49575, 53541, 82625, 85269, 87075, 89235, 142115, 145125, 148725, 247875, 255807, 267705, 426345, 435375, 446175, 710575, 743625, 767421, 1279035, 1338525, 2131725, 2230875, 2302263, 3552875, 3837105, 6395175, 6692625, 10658625, 11511315, 19185525, 31975875, 57556575, 95927625, 287782875]

約数ペア:

[(1, 287782875), (3, 95927625), (5, 57556575), (9, 31975875), (15, 19185525), (25, 11511315), (27, 10658625), (43, 6692625), (45, 6395175), (75, 3837105), (81, 3552875), (125, 2302263), (129, 2230875), (135, 2131725), (215, 1338525), (225, 1279035), (375, 767421), (387, 743625), (405, 710575), (645, 446175), (661, 435375), (675, 426345), (1075, 267705), (1125, 255807), (1161, 247875), (1935, 148725), (1983, 145125), (2025, 142115), (3225, 89235), (3305, 87075), (3375, 85269), (3483, 82625), (5375, 53541), (5805, 49575), (5949, 48375), (9675, 29745), (9915, 29025), (10125, 28423), (16125, 17847), (16525, 17415)]