21200963

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3559}}^1$

素因数の和:3626

約数の個数: 16

約数和(自身を含む): 25973760

約数和(自身を除く): 4772797

約数列:

[1, 7, 23, 37, 161, 259, 851, 3559, 5957, 24913, 81857, 131683, 572999, 921781, 3028709, 21200963]

約数ペア:

[(1, 21200963), (7, 3028709), (23, 921781), (37, 572999), (161, 131683), (259, 81857), (851, 24913), (3559, 5957)]