21288808

素因数分解:

$2^3\times {\mathrm{443}}^1\times {\mathrm{6007}}^1$

素因数の和:6456

約数の個数: 16

約数和(自身を含む): 40013280

約数和(自身を除く): 18724472

約数列:

[1, 2, 4, 8, 443, 886, 1772, 3544, 6007, 12014, 24028, 48056, 2661101, 5322202, 10644404, 21288808]

約数ペア:

[(1, 21288808), (2, 10644404), (4, 5322202), (8, 2661101), (443, 48056), (886, 24028), (1772, 12014), (3544, 6007)]