81519040

素因数分解:

$2^6\times 5^1\times {\mathrm{254747}}^1$

素因数の和:254764

約数の個数: 28

約数和(自身を含む): 194117976

約数和(自身を除く): 112598936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 254747, 509494, 1018988, 1273735, 2037976, 2547470, 4075952, 5094940, 8151904, 10189880, 16303808, 20379760, 40759520, 81519040]

約数ペア:

[(1, 81519040), (2, 40759520), (4, 20379760), (5, 16303808), (8, 10189880), (10, 8151904), (16, 5094940), (20, 4075952), (32, 2547470), (40, 2037976), (64, 1273735), (80, 1018988), (160, 509494), (320, 254747)]