31782375

素因数分解:

$3^4\times 5^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:143

約数の個数: 80

約数和(自身を含む): 61460256

約数和(自身を除く): 29677881

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 73, 75, 81, 125, 129, 135, 215, 219, 225, 365, 375, 387, 405, 645, 657, 675, 1075, 1095, 1125, 1161, 1825, 1935, 1971, 2025, 3139, 3225, 3285, 3375, 3483, 5375, 5475, 5805, 5913, 9125, 9417, 9675, 9855, 10125, 15695, 16125, 16425, 17415, 27375, 28251, 29025, 29565, 47085, 48375, 49275, 78475, 82125, 84753, 87075, 141255, 145125, 147825, 235425, 246375, 254259, 392375, 423765, 435375, 706275, 739125, 1177125, 1271295, 2118825, 3531375, 6356475, 10594125, 31782375]

約数ペア:

[(1, 31782375), (3, 10594125), (5, 6356475), (9, 3531375), (15, 2118825), (25, 1271295), (27, 1177125), (43, 739125), (45, 706275), (73, 435375), (75, 423765), (81, 392375), (125, 254259), (129, 246375), (135, 235425), (215, 147825), (219, 145125), (225, 141255), (365, 87075), (375, 84753), (387, 82125), (405, 78475), (645, 49275), (657, 48375), (675, 47085), (1075, 29565), (1095, 29025), (1125, 28251), (1161, 27375), (1825, 17415), (1935, 16425), (1971, 16125), (2025, 15695), (3139, 10125), (3225, 9855), (3285, 9675), (3375, 9417), (3483, 9125), (5375, 5913), (5475, 5805)]