81511875

素因数分解:

$3^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:406

約数の個数: 60

約数和(自身を含む): 150995416

約数和(自身を除く): 69483541

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 125, 129, 215, 225, 337, 375, 387, 625, 645, 1011, 1075, 1125, 1685, 1875, 1935, 3033, 3225, 5055, 5375, 5625, 8425, 9675, 14491, 15165, 16125, 25275, 26875, 42125, 43473, 48375, 72455, 75825, 80625, 126375, 130419, 210625, 217365, 241875, 362275, 379125, 631875, 652095, 1086825, 1811375, 1895625, 3260475, 5434125, 9056875, 16302375, 27170625, 81511875]

約数ペア:

[(1, 81511875), (3, 27170625), (5, 16302375), (9, 9056875), (15, 5434125), (25, 3260475), (43, 1895625), (45, 1811375), (75, 1086825), (125, 652095), (129, 631875), (215, 379125), (225, 362275), (337, 241875), (375, 217365), (387, 210625), (625, 130419), (645, 126375), (1011, 80625), (1075, 75825), (1125, 72455), (1685, 48375), (1875, 43473), (1935, 42125), (3033, 26875), (3225, 25275), (5055, 16125), (5375, 15165), (5625, 14491), (8425, 9675)]