21255465

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{239}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 43666560

約数和(自身を除く): 22411095

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 121, 147, 165, 231, 239, 245, 363, 385, 539, 605, 717, 735, 847, 1155, 1195, 1617, 1673, 1815, 2541, 2629, 2695, 3585, 4235, 5019, 5929, 7887, 8085, 8365, 11711, 12705, 13145, 17787, 18403, 25095, 28919, 29645, 35133, 39435, 55209, 58555, 86757, 88935, 92015, 128821, 144595, 175665, 202433, 276045, 386463, 433785, 607299, 644105, 1012165, 1417031, 1932315, 3036495, 4251093, 7085155, 21255465]

約数ペア:

[(1, 21255465), (3, 7085155), (5, 4251093), (7, 3036495), (11, 1932315), (15, 1417031), (21, 1012165), (33, 644105), (35, 607299), (49, 433785), (55, 386463), (77, 276045), (105, 202433), (121, 175665), (147, 144595), (165, 128821), (231, 92015), (239, 88935), (245, 86757), (363, 58555), (385, 55209), (539, 39435), (605, 35133), (717, 29645), (735, 28919), (847, 25095), (1155, 18403), (1195, 17787), (1617, 13145), (1673, 12705), (1815, 11711), (2541, 8365), (2629, 8085), (2695, 7887), (3585, 5929), (4235, 5019)]