20690468

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4463}}^1$

素因数の和:4547

約数の個数: 24

約数和(自身を含む): 38747520

約数和(自身を除く): 18057052

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4463, 4636, 8926, 17852, 84797, 169594, 272243, 339188, 544486, 1088972, 5172617, 10345234, 20690468]

約数ペア:

[(1, 20690468), (2, 10345234), (4, 5172617), (19, 1088972), (38, 544486), (61, 339188), (76, 272243), (122, 169594), (244, 84797), (1159, 17852), (2318, 8926), (4463, 4636)]