21085467

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^2$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 31156272

約数和(自身を除く): 10070805

約数列:

[1, 3, 13, 39, 53, 101, 159, 303, 689, 1313, 2067, 3939, 5353, 10201, 16059, 30603, 69589, 132613, 208767, 397839, 540653, 1621959, 7028489, 21085467]

約数ペア:

[(1, 21085467), (3, 7028489), (13, 1621959), (39, 540653), (53, 397839), (101, 208767), (159, 132613), (303, 69589), (689, 30603), (1313, 16059), (2067, 10201), (3939, 5353)]