21374639

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7867}}^1$

素因数の和:7910

約数の個数: 16

約数和(自身を含む): 26436480

約数和(自身を除く): 5061841

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7867, 86537, 102271, 149473, 1124981, 1644203, 1943149, 21374639]

約数ペア:

[(1, 21374639), (11, 1943149), (13, 1644203), (19, 1124981), (143, 149473), (209, 102271), (247, 86537), (2717, 7867)]