21153377

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2267}}^1$

素因数の和:2348

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 4393375

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2267, 9331, 15869, 70277, 97481, 491939, 682367, 3021911, 21153377]

約数ペア:

[(1, 21153377), (7, 3021911), (31, 682367), (43, 491939), (217, 97481), (301, 70277), (1333, 15869), (2267, 9331)]