20091028

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{977}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 36229032

約数和(自身を除く): 16138004

約数列:

[1, 2, 4, 53, 97, 106, 194, 212, 388, 977, 1954, 3908, 5141, 10282, 20564, 51781, 94769, 103562, 189538, 207124, 379076, 5022757, 10045514, 20091028]

約数ペア:

[(1, 20091028), (2, 10045514), (4, 5022757), (53, 379076), (97, 207124), (106, 189538), (194, 103562), (212, 94769), (388, 51781), (977, 20564), (1954, 10282), (3908, 5141)]