21605416

素因数分解:

$2^3\times 7^1\times {\mathrm{385811}}^1$

素因数の和:385824

約数の個数: 16

約数和(自身を含む): 46297440

約数和(自身を除く): 24692024

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 385811, 771622, 1543244, 2700677, 3086488, 5401354, 10802708, 21605416]

約数ペア:

[(1, 21605416), (2, 10802708), (4, 5401354), (7, 3086488), (8, 2700677), (14, 1543244), (28, 771622), (56, 385811)]