20320984

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{149419}}^1$

素因数の和:149442

約数の個数: 16

約数和(自身を含む): 40343400

約数和(自身を除く): 20022416

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 149419, 298838, 597676, 1195352, 2540123, 5080246, 10160492, 20320984]

約数ペア:

[(1, 20320984), (2, 10160492), (4, 5080246), (8, 2540123), (17, 1195352), (34, 597676), (68, 298838), (136, 149419)]