81391856

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55901}}^1$

素因数の和:55929

約数の個数: 40

約数和(自身を含む): 194091744

約数和(自身を除く): 112699888

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 55901, 111802, 223604, 391307, 447208, 726713, 782614, 894416, 1453426, 1565228, 2906852, 3130456, 5086991, 5813704, 6260912, 10173982, 11627408, 20347964, 40695928, 81391856]

約数ペア:

[(1, 81391856), (2, 40695928), (4, 20347964), (7, 11627408), (8, 10173982), (13, 6260912), (14, 5813704), (16, 5086991), (26, 3130456), (28, 2906852), (52, 1565228), (56, 1453426), (91, 894416), (104, 782614), (112, 726713), (182, 447208), (208, 391307), (364, 223604), (728, 111802), (1456, 55901)]