21179416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155731}}^1$

素因数の和:155754

約数の個数: 16

約数和(自身を含む): 42047640

約数和(自身を除く): 20868224

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155731, 311462, 622924, 1245848, 2647427, 5294854, 10589708, 21179416]

約数ペア:

[(1, 21179416), (2, 10589708), (4, 5294854), (8, 2647427), (17, 1245848), (34, 622924), (68, 311462), (136, 155731)]