81574480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78437}}^1$

素因数の和:78463

約数の個数: 40

約数和(自身を含む): 204252552

約数和(自身を除く): 122678072

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 78437, 156874, 313748, 392185, 627496, 784370, 1019681, 1254992, 1568740, 2039362, 3137480, 4078724, 5098405, 6274960, 8157448, 10196810, 16314896, 20393620, 40787240, 81574480]

約数ペア:

[(1, 81574480), (2, 40787240), (4, 20393620), (5, 16314896), (8, 10196810), (10, 8157448), (13, 6274960), (16, 5098405), (20, 4078724), (26, 3137480), (40, 2039362), (52, 1568740), (65, 1254992), (80, 1019681), (104, 784370), (130, 627496), (208, 392185), (260, 313748), (520, 156874), (1040, 78437)]