21254673

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 11692527

約数列:

[1, 3, 11, 19, 33, 57, 109, 209, 311, 327, 627, 933, 1199, 2071, 3421, 3597, 5909, 6213, 10263, 17727, 22781, 33899, 64999, 68343, 101697, 194997, 372889, 644081, 1118667, 1932243, 7084891, 21254673]

約数ペア:

[(1, 21254673), (3, 7084891), (11, 1932243), (19, 1118667), (33, 644081), (57, 372889), (109, 194997), (209, 101697), (311, 68343), (327, 64999), (627, 33899), (933, 22781), (1199, 17727), (2071, 10263), (3421, 6213), (3597, 5909)]