21680640

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{941}}^1$

素因数の和:970

約数の個数: 120

約数和(自身を含む): 75165948

約数和(自身を除く): 53485308

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 941, 960, 1152, 1280, 1440, 1536, 1882, 1920, 2304, 2560, 2823, 2880, 3764, 3840, 4608, 4705, 5646, 5760, 7528, 7680, 8469, 9410, 11292, 11520, 14115, 15056, 16938, 18820, 22584, 23040, 28230, 30112, 33876, 37640, 42345, 45168, 56460, 60224, 67752, 75280, 84690, 90336, 112920, 120448, 135504, 150560, 169380, 180672, 225840, 240896, 271008, 301120, 338760, 361344, 451680, 481792, 542016, 602240, 677520, 722688, 903360, 1084032, 1204480, 1355040, 1445376, 1806720, 2168064, 2408960, 2710080, 3613440, 4336128, 5420160, 7226880, 10840320, 21680640]

約数ペア:

[(1, 21680640), (2, 10840320), (3, 7226880), (4, 5420160), (5, 4336128), (6, 3613440), (8, 2710080), (9, 2408960), (10, 2168064), (12, 1806720), (15, 1445376), (16, 1355040), (18, 1204480), (20, 1084032), (24, 903360), (30, 722688), (32, 677520), (36, 602240), (40, 542016), (45, 481792), (48, 451680), (60, 361344), (64, 338760), (72, 301120), (80, 271008), (90, 240896), (96, 225840), (120, 180672), (128, 169380), (144, 150560), (160, 135504), (180, 120448), (192, 112920), (240, 90336), (256, 84690), (288, 75280), (320, 67752), (360, 60224), (384, 56460), (480, 45168), (512, 42345), (576, 37640), (640, 33876), (720, 30112), (768, 28230), (941, 23040), (960, 22584), (1152, 18820), (1280, 16938), (1440, 15056), (1536, 14115), (1882, 11520), (1920, 11292), (2304, 9410), (2560, 8469), (2823, 7680), (2880, 7528), (3764, 5760), (3840, 5646), (4608, 4705)]