21334280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48487}}^1$

素因数の和:48509

約数の個数: 32

約数和(自身を含む): 52367040

約数和(自身を除く): 31032760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48487, 96974, 193948, 242435, 387896, 484870, 533357, 969740, 1066714, 1939480, 2133428, 2666785, 4266856, 5333570, 10667140, 21334280]

約数ペア:

[(1, 21334280), (2, 10667140), (4, 5333570), (5, 4266856), (8, 2666785), (10, 2133428), (11, 1939480), (20, 1066714), (22, 969740), (40, 533357), (44, 484870), (55, 387896), (88, 242435), (110, 193948), (220, 96974), (440, 48487)]