28704921

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 45219840

約数和(自身を除く): 16514919

約数列:

[1, 3, 7, 21, 47, 127, 141, 229, 329, 381, 687, 889, 987, 1603, 2667, 4809, 5969, 10763, 17907, 29083, 32289, 41783, 75341, 87249, 125349, 203581, 226023, 610743, 1366901, 4100703, 9568307, 28704921]

約数ペア:

[(1, 28704921), (3, 9568307), (7, 4100703), (21, 1366901), (47, 610743), (127, 226023), (141, 203581), (229, 125349), (329, 87249), (381, 75341), (687, 41783), (889, 32289), (987, 29083), (1603, 17907), (2667, 10763), (4809, 5969)]