21647181440

素因数分解:

$2^7\times 5^1\times {\mathrm{3221}}^1\times {\mathrm{10501}}^1$

素因数の和:13741

約数の個数: 64

約数和(自身を含む): 51771289320

約数和(自身を除く): 30124107880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 3221, 6442, 10501, 12884, 16105, 21002, 25768, 32210, 42004, 51536, 52505, 64420, 84008, 103072, 105010, 128840, 168016, 206144, 210020, 257680, 336032, 412288, 420040, 515360, 672064, 840080, 1030720, 1344128, 1680160, 2061440, 3360320, 6720640, 33823721, 67647442, 135294884, 169118605, 270589768, 338237210, 541179536, 676474420, 1082359072, 1352948840, 2164718144, 2705897680, 4329436288, 5411795360, 10823590720, 21647181440]

約数ペア:

[(1, 21647181440), (2, 10823590720), (4, 5411795360), (5, 4329436288), (8, 2705897680), (10, 2164718144), (16, 1352948840), (20, 1082359072), (32, 676474420), (40, 541179536), (64, 338237210), (80, 270589768), (128, 169118605), (160, 135294884), (320, 67647442), (640, 33823721), (3221, 6720640), (6442, 3360320), (10501, 2061440), (12884, 1680160), (16105, 1344128), (21002, 1030720), (25768, 840080), (32210, 672064), (42004, 515360), (51536, 420040), (52505, 412288), (64420, 336032), (84008, 257680), (103072, 210020), (105010, 206144), (128840, 168016)]