12821890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18059}}^1$

素因数の和:18137

約数の個数: 16

約数和(自身を含む): 23405760

約数和(自身を除く): 10583870

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 18059, 36118, 90295, 180590, 1282189, 2564378, 6410945, 12821890]

約数ペア:

[(1, 12821890), (2, 6410945), (5, 2564378), (10, 1282189), (71, 180590), (142, 90295), (355, 36118), (710, 18059)]