21447503

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4721}}^1$

素因数の和:4798

約数の個数: 16

約数和(自身を含む): 27198720

約数和(自身を除く): 5751217

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4721, 33047, 51931, 278539, 363517, 1949773, 3063929, 21447503]

約数ペア:

[(1, 21447503), (7, 3063929), (11, 1949773), (59, 363517), (77, 278539), (413, 51931), (649, 33047), (4543, 4721)]