20405788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{5857}}^1$

素因数の和:5941

約数の個数: 24

約数和(自身を含む): 39037712

約数和(自身を除く): 18631924

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 5857, 11714, 23428, 76141, 152282, 304564, 392419, 784838, 1569676, 5101447, 10202894, 20405788]

約数ペア:

[(1, 20405788), (2, 10202894), (4, 5101447), (13, 1569676), (26, 784838), (52, 392419), (67, 304564), (134, 152282), (268, 76141), (871, 23428), (1742, 11714), (3484, 5857)]