19710704

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{491}}^1$

素因数の和:705

約数の個数: 40

約数和(自身を含む): 41424432

約数和(自身を除く): 21713728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 193, 208, 386, 491, 772, 982, 1544, 1964, 2509, 3088, 3928, 5018, 6383, 7856, 10036, 12766, 20072, 25532, 40144, 51064, 94763, 102128, 189526, 379052, 758104, 1231919, 1516208, 2463838, 4927676, 9855352, 19710704]

約数ペア:

[(1, 19710704), (2, 9855352), (4, 4927676), (8, 2463838), (13, 1516208), (16, 1231919), (26, 758104), (52, 379052), (104, 189526), (193, 102128), (208, 94763), (386, 51064), (491, 40144), (772, 25532), (982, 20072), (1544, 12766), (1964, 10036), (2509, 7856), (3088, 6383), (3928, 5018)]