21074288

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77479}}^1$

素因数の和:77504

約数の個数: 20

約数和(自身を含む): 43233840

約数和(自身を除く): 22159552

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77479, 154958, 309916, 619832, 1239664, 1317143, 2634286, 5268572, 10537144, 21074288]

約数ペア:

[(1, 21074288), (2, 10537144), (4, 5268572), (8, 2634286), (16, 1317143), (17, 1239664), (34, 619832), (68, 309916), (136, 154958), (272, 77479)]