21208154

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 36260352

約数和(自身を除く): 15052198

約数列:

[1, 2, 11, 22, 31, 62, 121, 242, 257, 341, 514, 682, 1331, 2662, 2827, 3751, 5654, 7502, 7967, 15934, 31097, 41261, 62194, 82522, 87637, 175274, 342067, 684134, 964007, 1928014, 10604077, 21208154]

約数ペア:

[(1, 21208154), (2, 10604077), (11, 1928014), (22, 964007), (31, 684134), (62, 342067), (121, 175274), (242, 87637), (257, 82522), (341, 62194), (514, 41261), (682, 31097), (1331, 15934), (2662, 7967), (2827, 7502), (3751, 5654)]