21219344

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18679}}^1$

素因数の和:18758

約数の個数: 20

約数和(自身を含む): 41693760

約数和(自身を除く): 20474416

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18679, 37358, 74716, 149432, 298864, 1326209, 2652418, 5304836, 10609672, 21219344]

約数ペア:

[(1, 21219344), (2, 10609672), (4, 5304836), (8, 2652418), (16, 1326209), (71, 298864), (142, 149432), (284, 74716), (568, 37358), (1136, 18679)]