21881886

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{280537}}^1$

素因数の和:280555

約数の個数: 16

約数和(自身を含む): 47130384

約数和(自身を除く): 25248498

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 280537, 561074, 841611, 1683222, 3646981, 7293962, 10940943, 21881886]

約数ペア:

[(1, 21881886), (2, 10940943), (3, 7293962), (6, 3646981), (13, 1683222), (26, 841611), (39, 561074), (78, 280537)]