21270755

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7297}}^1$

素因数の和:7366

約数の個数: 16

約数和(自身を含む): 28374624

約数和(自身を除く): 7103869

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7297, 36485, 80267, 386741, 401335, 1933705, 4254151, 21270755]

約数ペア:

[(1, 21270755), (5, 4254151), (11, 1933705), (53, 401335), (55, 386741), (265, 80267), (583, 36485), (2915, 7297)]