19971840

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{743}}^1$

素因数の和:774

約数の個数: 144

約数和(自身を含む): 72995328

約数和(自身を除く): 53023488

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 743, 768, 840, 896, 960, 1120, 1280, 1344, 1486, 1680, 1792, 1920, 2229, 2240, 2688, 2972, 3360, 3715, 3840, 4458, 4480, 5201, 5376, 5944, 6720, 7430, 8916, 8960, 10402, 11145, 11888, 13440, 14860, 15603, 17832, 20804, 22290, 23776, 26005, 26880, 29720, 31206, 35664, 41608, 44580, 47552, 52010, 59440, 62412, 71328, 78015, 83216, 89160, 95104, 104020, 118880, 124824, 142656, 156030, 166432, 178320, 190208, 208040, 237760, 249648, 285312, 312060, 332864, 356640, 416080, 475520, 499296, 570624, 624120, 665728, 713280, 832160, 951040, 998592, 1248240, 1331456, 1426560, 1664320, 1997184, 2496480, 2853120, 3328640, 3994368, 4992960, 6657280, 9985920, 19971840]

約数ペア:

[(1, 19971840), (2, 9985920), (3, 6657280), (4, 4992960), (5, 3994368), (6, 3328640), (7, 2853120), (8, 2496480), (10, 1997184), (12, 1664320), (14, 1426560), (15, 1331456), (16, 1248240), (20, 998592), (21, 951040), (24, 832160), (28, 713280), (30, 665728), (32, 624120), (35, 570624), (40, 499296), (42, 475520), (48, 416080), (56, 356640), (60, 332864), (64, 312060), (70, 285312), (80, 249648), (84, 237760), (96, 208040), (105, 190208), (112, 178320), (120, 166432), (128, 156030), (140, 142656), (160, 124824), (168, 118880), (192, 104020), (210, 95104), (224, 89160), (240, 83216), (256, 78015), (280, 71328), (320, 62412), (336, 59440), (384, 52010), (420, 47552), (448, 44580), (480, 41608), (560, 35664), (640, 31206), (672, 29720), (743, 26880), (768, 26005), (840, 23776), (896, 22290), (960, 20804), (1120, 17832), (1280, 15603), (1344, 14860), (1486, 13440), (1680, 11888), (1792, 11145), (1920, 10402), (2229, 8960), (2240, 8916), (2688, 7430), (2972, 6720), (3360, 5944), (3715, 5376), (3840, 5201), (4458, 4480)]