81031680

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{3517}}^1$

素因数の和:3546

約数の個数: 120

約数和(自身を含む): 280715292

約数和(自身を除く): 199683612

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, 960, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3517, 3840, 4608, 5760, 7034, 7680, 10551, 11520, 14068, 17585, 21102, 23040, 28136, 31653, 35170, 42204, 52755, 56272, 63306, 70340, 84408, 105510, 112544, 126612, 140680, 158265, 168816, 211020, 225088, 253224, 281360, 316530, 337632, 422040, 450176, 506448, 562720, 633060, 675264, 844080, 900352, 1012896, 1125440, 1266120, 1350528, 1688160, 1800704, 2025792, 2250880, 2532240, 2701056, 3376320, 4051584, 4501760, 5064480, 5402112, 6752640, 8103168, 9003520, 10128960, 13505280, 16206336, 20257920, 27010560, 40515840, 81031680]

約数ペア:

[(1, 81031680), (2, 40515840), (3, 27010560), (4, 20257920), (5, 16206336), (6, 13505280), (8, 10128960), (9, 9003520), (10, 8103168), (12, 6752640), (15, 5402112), (16, 5064480), (18, 4501760), (20, 4051584), (24, 3376320), (30, 2701056), (32, 2532240), (36, 2250880), (40, 2025792), (45, 1800704), (48, 1688160), (60, 1350528), (64, 1266120), (72, 1125440), (80, 1012896), (90, 900352), (96, 844080), (120, 675264), (128, 633060), (144, 562720), (160, 506448), (180, 450176), (192, 422040), (240, 337632), (256, 316530), (288, 281360), (320, 253224), (360, 225088), (384, 211020), (480, 168816), (512, 158265), (576, 140680), (640, 126612), (720, 112544), (768, 105510), (960, 84408), (1152, 70340), (1280, 63306), (1440, 56272), (1536, 52755), (1920, 42204), (2304, 35170), (2560, 31653), (2880, 28136), (3517, 23040), (3840, 21102), (4608, 17585), (5760, 14068), (7034, 11520), (7680, 10551)]