20780160

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 128

約数和(自身を含む): 67564800

約数和(自身を除く): 46784640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 79, 80, 96, 120, 128, 137, 158, 160, 192, 237, 240, 274, 316, 320, 384, 395, 411, 474, 480, 548, 632, 640, 685, 790, 822, 948, 960, 1096, 1185, 1264, 1370, 1580, 1644, 1896, 1920, 2055, 2192, 2370, 2528, 2740, 3160, 3288, 3792, 4110, 4384, 4740, 5056, 5480, 6320, 6576, 7584, 8220, 8768, 9480, 10112, 10823, 10960, 12640, 13152, 15168, 16440, 17536, 18960, 21646, 21920, 25280, 26304, 30336, 32469, 32880, 37920, 43292, 43840, 50560, 52608, 54115, 64938, 65760, 75840, 86584, 87680, 108230, 129876, 131520, 151680, 162345, 173168, 216460, 259752, 263040, 324690, 346336, 432920, 519504, 649380, 692672, 865840, 1039008, 1298760, 1385344, 1731680, 2078016, 2597520, 3463360, 4156032, 5195040, 6926720, 10390080, 20780160]

約数ペア:

[(1, 20780160), (2, 10390080), (3, 6926720), (4, 5195040), (5, 4156032), (6, 3463360), (8, 2597520), (10, 2078016), (12, 1731680), (15, 1385344), (16, 1298760), (20, 1039008), (24, 865840), (30, 692672), (32, 649380), (40, 519504), (48, 432920), (60, 346336), (64, 324690), (79, 263040), (80, 259752), (96, 216460), (120, 173168), (128, 162345), (137, 151680), (158, 131520), (160, 129876), (192, 108230), (237, 87680), (240, 86584), (274, 75840), (316, 65760), (320, 64938), (384, 54115), (395, 52608), (411, 50560), (474, 43840), (480, 43292), (548, 37920), (632, 32880), (640, 32469), (685, 30336), (790, 26304), (822, 25280), (948, 21920), (960, 21646), (1096, 18960), (1185, 17536), (1264, 16440), (1370, 15168), (1580, 13152), (1644, 12640), (1896, 10960), (1920, 10823), (2055, 10112), (2192, 9480), (2370, 8768), (2528, 8220), (2740, 7584), (3160, 6576), (3288, 6320), (3792, 5480), (4110, 5056), (4384, 4740)]