21706705

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{971}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 27713664

約数和(自身を除く): 6006959

約数列:

[1, 5, 17, 85, 263, 971, 1315, 4471, 4855, 16507, 22355, 82535, 255373, 1276865, 4341341, 21706705]

約数ペア:

[(1, 21706705), (5, 4341341), (17, 1276865), (85, 255373), (263, 82535), (971, 22355), (1315, 16507), (4471, 4855)]