21980714

素因数分解:

$2^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{1063}}^1$

素因数の和:1290

約数の個数: 24

約数和(自身を含む): 38572128

約数和(自身を除く): 16591414

約数列:

[1, 2, 7, 14, 49, 98, 211, 422, 1063, 1477, 2126, 2954, 7441, 10339, 14882, 20678, 52087, 104174, 224293, 448586, 1570051, 3140102, 10990357, 21980714]

約数ペア:

[(1, 21980714), (2, 10990357), (7, 3140102), (14, 1570051), (49, 448586), (98, 224293), (211, 104174), (422, 52087), (1063, 20678), (1477, 14882), (2126, 10339), (2954, 7441)]