21445655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1051}}^1$

素因数の和:1127

約数の個数: 32

約数和(自身を含む): 32721408

約数和(自身を除く): 11275753

約数列:

[1, 5, 7, 11, 35, 53, 55, 77, 265, 371, 385, 583, 1051, 1855, 2915, 4081, 5255, 7357, 11561, 20405, 36785, 55703, 57805, 80927, 278515, 389921, 404635, 612733, 1949605, 3063665, 4289131, 21445655]

約数ペア:

[(1, 21445655), (5, 4289131), (7, 3063665), (11, 1949605), (35, 612733), (53, 404635), (55, 389921), (77, 278515), (265, 80927), (371, 57805), (385, 55703), (583, 36785), (1051, 20405), (1855, 11561), (2915, 7357), (4081, 5255)]