20285804

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{97}}^2$

素因数の和:223

約数の個数: 54

約数和(自身を含む): 45519516

約数和(自身を除く): 25233712

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 97, 98, 154, 194, 196, 308, 388, 539, 679, 1067, 1078, 1358, 2134, 2156, 2716, 4268, 4753, 7469, 9409, 9506, 14938, 18818, 19012, 29876, 37636, 52283, 65863, 103499, 104566, 131726, 206998, 209132, 263452, 413996, 461041, 724493, 922082, 1448986, 1844164, 2897972, 5071451, 10142902, 20285804]

約数ペア:

[(1, 20285804), (2, 10142902), (4, 5071451), (7, 2897972), (11, 1844164), (14, 1448986), (22, 922082), (28, 724493), (44, 461041), (49, 413996), (77, 263452), (97, 209132), (98, 206998), (154, 131726), (194, 104566), (196, 103499), (308, 65863), (388, 52283), (539, 37636), (679, 29876), (1067, 19012), (1078, 18818), (1358, 14938), (2134, 9506), (2156, 9409), (2716, 7469), (4268, 4753)]