21708904

素因数分解:

$2^3\times 7^1\times {\mathrm{387659}}^1$

素因数の和:387672

約数の個数: 16

約数和(自身を含む): 46519200

約数和(自身を除く): 24810296

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 387659, 775318, 1550636, 2713613, 3101272, 5427226, 10854452, 21708904]

約数ペア:

[(1, 21708904), (2, 10854452), (4, 5427226), (7, 3101272), (8, 2713613), (14, 1550636), (28, 775318), (56, 387659)]