21724486

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81671}}^1$

素因数の和:81699

約数の個数: 16

約数和(自身を含む): 39202560

約数和(自身を除く): 17478074

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 81671, 163342, 571697, 1143394, 1551749, 3103498, 10862243, 21724486]

約数ペア:

[(1, 21724486), (2, 10862243), (7, 3103498), (14, 1551749), (19, 1143394), (38, 571697), (133, 163342), (266, 81671)]