81459712

素因数分解:

$2^9\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:816

約数の個数: 40

約数和(自身を含む): 163577700

約数和(自身を除く): 82117988

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 389, 409, 512, 778, 818, 1556, 1636, 3112, 3272, 6224, 6544, 12448, 13088, 24896, 26176, 49792, 52352, 99584, 104704, 159101, 199168, 209408, 318202, 636404, 1272808, 2545616, 5091232, 10182464, 20364928, 40729856, 81459712]

約数ペア:

[(1, 81459712), (2, 40729856), (4, 20364928), (8, 10182464), (16, 5091232), (32, 2545616), (64, 1272808), (128, 636404), (256, 318202), (389, 209408), (409, 199168), (512, 159101), (778, 104704), (818, 99584), (1556, 52352), (1636, 49792), (3112, 26176), (3272, 24896), (6224, 13088), (6544, 12448)]