81943875

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{431}}^1$

素因数の和:478

約数の個数: 72

約数和(自身を含む): 160325568

約数和(自身を除く): 78381693

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 169, 195, 225, 325, 375, 431, 507, 585, 845, 975, 1125, 1293, 1521, 1625, 2155, 2535, 2925, 3879, 4225, 4875, 5603, 6465, 7605, 10775, 12675, 14625, 16809, 19395, 21125, 28015, 32325, 38025, 50427, 53875, 63375, 72839, 84045, 96975, 140075, 161625, 190125, 218517, 252135, 364195, 420225, 484875, 655551, 700375, 1092585, 1260675, 1820975, 2101125, 3277755, 5462925, 6303375, 9104875, 16388775, 27314625, 81943875]

約数ペア:

[(1, 81943875), (3, 27314625), (5, 16388775), (9, 9104875), (13, 6303375), (15, 5462925), (25, 3277755), (39, 2101125), (45, 1820975), (65, 1260675), (75, 1092585), (117, 700375), (125, 655551), (169, 484875), (195, 420225), (225, 364195), (325, 252135), (375, 218517), (431, 190125), (507, 161625), (585, 140075), (845, 96975), (975, 84045), (1125, 72839), (1293, 63375), (1521, 53875), (1625, 50427), (2155, 38025), (2535, 32325), (2925, 28015), (3879, 21125), (4225, 19395), (4875, 16809), (5603, 14625), (6465, 12675), (7605, 10775)]