21491043

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1627}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 35633664

約数和(自身を除く): 14142621

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1627, 1887, 4403, 4881, 11389, 13209, 27659, 34167, 60199, 82977, 180597, 193613, 421393, 580839, 1023383, 1264179, 3070149, 7163681, 21491043]

約数ペア:

[(1, 21491043), (3, 7163681), (7, 3070149), (17, 1264179), (21, 1023383), (37, 580839), (51, 421393), (111, 193613), (119, 180597), (259, 82977), (357, 60199), (629, 34167), (777, 27659), (1627, 13209), (1887, 11389), (4403, 4881)]