215687529

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 338257920

約数和(自身を除く): 122570391

約数列:

[1, 3, 9, 27, 29, 81, 87, 127, 241, 243, 261, 381, 723, 783, 1143, 2169, 2349, 3429, 3683, 6507, 6989, 7047, 10287, 11049, 19521, 20967, 30607, 30861, 33147, 58563, 62901, 91821, 99441, 188703, 275463, 298323, 566109, 826389, 887603, 894969, 1698327, 2479167, 2662809, 7437501, 7988427, 23965281, 71895843, 215687529]

約数ペア:

[(1, 215687529), (3, 71895843), (9, 23965281), (27, 7988427), (29, 7437501), (81, 2662809), (87, 2479167), (127, 1698327), (241, 894969), (243, 887603), (261, 826389), (381, 566109), (723, 298323), (783, 275463), (1143, 188703), (2169, 99441), (2349, 91821), (3429, 62901), (3683, 58563), (6507, 33147), (6989, 30861), (7047, 30607), (10287, 20967), (11049, 19521)]