21578104

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:583

約数の個数: 32

約数和(自身を含む): 41860800

約数和(自身を除く): 20282696

約数列:

[1, 2, 4, 8, 37, 74, 148, 269, 271, 296, 538, 542, 1076, 1084, 2152, 2168, 9953, 10027, 19906, 20054, 39812, 40108, 72899, 79624, 80216, 145798, 291596, 583192, 2697263, 5394526, 10789052, 21578104]

約数ペア:

[(1, 21578104), (2, 10789052), (4, 5394526), (8, 2697263), (37, 583192), (74, 291596), (148, 145798), (269, 80216), (271, 79624), (296, 72899), (538, 40108), (542, 39812), (1076, 20054), (1084, 19906), (2152, 10027), (2168, 9953)]