21708849

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 11238351

約数列:

[1, 3, 19, 23, 29, 57, 69, 87, 437, 551, 571, 667, 1311, 1653, 1713, 2001, 10849, 12673, 13133, 16559, 32547, 38019, 39399, 49677, 249527, 314621, 380857, 748581, 943863, 1142571, 7236283, 21708849]

約数ペア:

[(1, 21708849), (3, 7236283), (19, 1142571), (23, 943863), (29, 748581), (57, 380857), (69, 314621), (87, 249527), (437, 49677), (551, 39399), (571, 38019), (667, 32547), (1311, 16559), (1653, 13133), (1713, 12673), (2001, 10849)]