21529277

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{677}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 27825120

約数和(自身を除く): 6295843

約数列:

[1, 7, 11, 49, 59, 77, 413, 539, 649, 677, 2891, 4543, 4739, 7447, 31801, 33173, 39943, 52129, 279601, 364903, 439373, 1957207, 3075611, 21529277]

約数ペア:

[(1, 21529277), (7, 3075611), (11, 1957207), (49, 439373), (59, 364903), (77, 279601), (413, 52129), (539, 39943), (649, 33173), (677, 31801), (2891, 7447), (4543, 4739)]