20797821

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{499}}^1$

素因数の和:937

約数の個数: 24

約数和(自身を含む): 32916000

約数和(自身を除く): 12118179

約数列:

[1, 3, 9, 11, 33, 99, 421, 499, 1263, 1497, 3789, 4491, 4631, 5489, 13893, 16467, 41679, 49401, 210079, 630237, 1890711, 2310869, 6932607, 20797821]

約数ペア:

[(1, 20797821), (3, 6932607), (9, 2310869), (11, 1890711), (33, 630237), (99, 210079), (421, 49401), (499, 41679), (1263, 16467), (1497, 13893), (3789, 5489), (4491, 4631)]