20257920

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{3517}}^1$

素因数の和:3542

約数の個数: 96

約数和(自身を含む): 69973020

約数和(自身を除く): 49715100

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, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1920, 2880, 3517, 5760, 7034, 10551, 14068, 17585, 21102, 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, 1012896, 1125440, 1266120, 1350528, 1688160, 2025792, 2250880, 2532240, 3376320, 4051584, 5064480, 6752640, 10128960, 20257920]

約数ペア:

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