81388960

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:278

約数の個数: 96

約数和(自身を含む): 200309760

約数和(自身を除く): 118920800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 79, 80, 94, 137, 158, 160, 188, 235, 274, 316, 376, 395, 470, 548, 632, 685, 752, 790, 940, 1096, 1264, 1370, 1504, 1580, 1880, 2192, 2528, 2740, 3160, 3713, 3760, 4384, 5480, 6320, 6439, 7426, 7520, 10823, 10960, 12640, 12878, 14852, 18565, 21646, 21920, 25756, 29704, 32195, 37130, 43292, 51512, 54115, 59408, 64390, 74260, 86584, 103024, 108230, 118816, 128780, 148520, 173168, 206048, 216460, 257560, 297040, 346336, 432920, 508681, 515120, 594080, 865840, 1017362, 1030240, 1731680, 2034724, 2543405, 4069448, 5086810, 8138896, 10173620, 16277792, 20347240, 40694480, 81388960]

約数ペア:

[(1, 81388960), (2, 40694480), (4, 20347240), (5, 16277792), (8, 10173620), (10, 8138896), (16, 5086810), (20, 4069448), (32, 2543405), (40, 2034724), (47, 1731680), (79, 1030240), (80, 1017362), (94, 865840), (137, 594080), (158, 515120), (160, 508681), (188, 432920), (235, 346336), (274, 297040), (316, 257560), (376, 216460), (395, 206048), (470, 173168), (548, 148520), (632, 128780), (685, 118816), (752, 108230), (790, 103024), (940, 86584), (1096, 74260), (1264, 64390), (1370, 59408), (1504, 54115), (1580, 51512), (1880, 43292), (2192, 37130), (2528, 32195), (2740, 29704), (3160, 25756), (3713, 21920), (3760, 21646), (4384, 18565), (5480, 14852), (6320, 12878), (6439, 12640), (7426, 10960), (7520, 10823)]