21986080

素因数分解:

$2^5\times 5^1\times {\mathrm{137413}}^1$

素因数の和:137428

約数の個数: 24

約数和(自身を含む): 51942492

約数和(自身を除く): 29956412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 137413, 274826, 549652, 687065, 1099304, 1374130, 2198608, 2748260, 4397216, 5496520, 10993040, 21986080]

約数ペア:

[(1, 21986080), (2, 10993040), (4, 5496520), (5, 4397216), (8, 2748260), (10, 2198608), (16, 1374130), (20, 1099304), (32, 687065), (40, 549652), (80, 274826), (160, 137413)]