21987273

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 39070080

約数和(自身を除く): 17082807

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 121, 187, 231, 357, 363, 509, 561, 847, 1309, 1527, 2057, 2541, 3563, 3927, 5599, 6171, 8653, 10689, 14399, 16797, 25959, 39193, 43197, 60571, 61589, 95183, 117579, 181713, 184767, 285549, 431123, 666281, 1047013, 1293369, 1998843, 3141039, 7329091, 21987273]

約数ペア:

[(1, 21987273), (3, 7329091), (7, 3141039), (11, 1998843), (17, 1293369), (21, 1047013), (33, 666281), (51, 431123), (77, 285549), (119, 184767), (121, 181713), (187, 117579), (231, 95183), (357, 61589), (363, 60571), (509, 43197), (561, 39193), (847, 25959), (1309, 16797), (1527, 14399), (2057, 10689), (2541, 8653), (3563, 6171), (3927, 5599)]