21335248

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{503}}^1$

素因数の和:763

約数の個数: 40

約数和(自身を含む): 45372096

約数和(自身を除く): 24036848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 241, 482, 503, 964, 1006, 1928, 2012, 2651, 3856, 4024, 5302, 5533, 8048, 10604, 11066, 21208, 22132, 42416, 44264, 88528, 121223, 242446, 484892, 969784, 1333453, 1939568, 2666906, 5333812, 10667624, 21335248]

約数ペア:

[(1, 21335248), (2, 10667624), (4, 5333812), (8, 2666906), (11, 1939568), (16, 1333453), (22, 969784), (44, 484892), (88, 242446), (176, 121223), (241, 88528), (482, 44264), (503, 42416), (964, 22132), (1006, 21208), (1928, 11066), (2012, 10604), (2651, 8048), (3856, 5533), (4024, 5302)]