31371705

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1091}}^1$

素因数の和:1179

約数の個数: 40

約数和(自身を含む): 57081024

約数和(自身を除く): 25709319

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 1065, 1091, 1917, 3195, 3273, 5455, 5751, 9585, 9819, 16365, 28755, 29457, 49095, 77461, 88371, 147285, 232383, 387305, 441855, 697149, 1161915, 2091447, 3485745, 6274341, 10457235, 31371705]

約数ペア:

[(1, 31371705), (3, 10457235), (5, 6274341), (9, 3485745), (15, 2091447), (27, 1161915), (45, 697149), (71, 441855), (81, 387305), (135, 232383), (213, 147285), (355, 88371), (405, 77461), (639, 49095), (1065, 29457), (1091, 28755), (1917, 16365), (3195, 9819), (3273, 9585), (5455, 5751)]