21345404

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{3527}}^1$

素因数の和:3637

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 18662116

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 356, 1513, 3026, 3527, 6052, 7054, 14108, 59959, 119918, 239836, 313903, 627806, 1255612, 5336351, 10672702, 21345404]

約数ペア:

[(1, 21345404), (2, 10672702), (4, 5336351), (17, 1255612), (34, 627806), (68, 313903), (89, 239836), (178, 119918), (356, 59959), (1513, 14108), (3026, 7054), (3527, 6052)]