388962819

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{212897}}^1$

素因数の和:212939

約数の個数: 24

約数和(自身を含む): 664241760

約数和(自身を除く): 275278941

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 212897, 638691, 1490279, 1916073, 4470837, 6174013, 13412511, 18522039, 43218091, 55566117, 129654273, 388962819]

約数ペア:

[(1, 388962819), (3, 129654273), (7, 55566117), (9, 43218091), (21, 18522039), (29, 13412511), (63, 6174013), (87, 4470837), (203, 1916073), (261, 1490279), (609, 638691), (1827, 212897)]