21798459

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1777}}^1$

素因数の和:1859

約数の個数: 24

約数和(自身を含む): 33284160

約数和(自身を除く): 11485701

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 1363, 1777, 4089, 5331, 12267, 15993, 51533, 83519, 154599, 250557, 463797, 751671, 2422051, 7266153, 21798459]

約数ペア:

[(1, 21798459), (3, 7266153), (9, 2422051), (29, 751671), (47, 463797), (87, 250557), (141, 154599), (261, 83519), (423, 51533), (1363, 15993), (1777, 12267), (4089, 5331)]