16981040

素因数分解:

$2^4\times 5^1\times {\mathrm{233}}^1\times {\mathrm{911}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 39693888

約数和(自身を除く): 22712848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233, 466, 911, 932, 1165, 1822, 1864, 2330, 3644, 3728, 4555, 4660, 7288, 9110, 9320, 14576, 18220, 18640, 36440, 72880, 212263, 424526, 849052, 1061315, 1698104, 2122630, 3396208, 4245260, 8490520, 16981040]

約数ペア:

[(1, 16981040), (2, 8490520), (4, 4245260), (5, 3396208), (8, 2122630), (10, 1698104), (16, 1061315), (20, 849052), (40, 424526), (80, 212263), (233, 72880), (466, 36440), (911, 18640), (932, 18220), (1165, 14576), (1822, 9320), (1864, 9110), (2330, 7288), (3644, 4660), (3728, 4555)]