20421120

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2659}}^1$

素因数の和:2685

約数の個数: 80

約数和(自身を含む): 65308320

約数和(自身を除く): 44887200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2659, 3840, 5318, 7680, 7977, 10636, 13295, 15954, 21272, 26590, 31908, 39885, 42544, 53180, 63816, 79770, 85088, 106360, 127632, 159540, 170176, 212720, 255264, 319080, 340352, 425440, 510528, 638160, 680704, 850880, 1021056, 1276320, 1361408, 1701760, 2042112, 2552640, 3403520, 4084224, 5105280, 6807040, 10210560, 20421120]

約数ペア:

[(1, 20421120), (2, 10210560), (3, 6807040), (4, 5105280), (5, 4084224), (6, 3403520), (8, 2552640), (10, 2042112), (12, 1701760), (15, 1361408), (16, 1276320), (20, 1021056), (24, 850880), (30, 680704), (32, 638160), (40, 510528), (48, 425440), (60, 340352), (64, 319080), (80, 255264), (96, 212720), (120, 170176), (128, 159540), (160, 127632), (192, 106360), (240, 85088), (256, 79770), (320, 63816), (384, 53180), (480, 42544), (512, 39885), (640, 31908), (768, 26590), (960, 21272), (1280, 15954), (1536, 13295), (1920, 10636), (2560, 7977), (2659, 7680), (3840, 5318)]