21392525

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11113}}^1$

素因数の和:11141

約数の個数: 24

約数和(自身を含む): 33075264

約数和(自身を除く): 11682739

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 11113, 55565, 77791, 122243, 277825, 388955, 611215, 855701, 1944775, 3056075, 4278505, 21392525]

約数ペア:

[(1, 21392525), (5, 4278505), (7, 3056075), (11, 1944775), (25, 855701), (35, 611215), (55, 388955), (77, 277825), (175, 122243), (275, 77791), (385, 55565), (1925, 11113)]