20868365

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4483}}^1$

素因数の和:4521

約数の個数: 24

約数和(自身を含む): 30670560

約数和(自身を除く): 9802195

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4483, 4655, 22415, 31381, 85177, 156905, 219667, 425885, 596239, 1098335, 2981195, 4173673, 20868365]

約数ペア:

[(1, 20868365), (5, 4173673), (7, 2981195), (19, 1098335), (35, 596239), (49, 425885), (95, 219667), (133, 156905), (245, 85177), (665, 31381), (931, 22415), (4483, 4655)]