21419878

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{5581}}^1$

素因数の和:5703

約数の個数: 16

約数和(自身を含む): 34161840

約数和(自身を除く): 12741962

約数列:

[1, 2, 19, 38, 101, 202, 1919, 3838, 5581, 11162, 106039, 212078, 563681, 1127362, 10709939, 21419878]

約数ペア:

[(1, 21419878), (2, 10709939), (19, 1127362), (38, 563681), (101, 212078), (202, 106039), (1919, 11162), (3838, 5581)]