21385060

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15959}}^1$

素因数の和:16035

約数の個数: 24

約数和(自身を含む): 45581760

約数和(自身を除く): 24196700

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15959, 31918, 63836, 79795, 159590, 319180, 1069253, 2138506, 4277012, 5346265, 10692530, 21385060]

約数ペア:

[(1, 21385060), (2, 10692530), (4, 5346265), (5, 4277012), (10, 2138506), (20, 1069253), (67, 319180), (134, 159590), (268, 79795), (335, 63836), (670, 31918), (1340, 15959)]