21378302

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:364

約数の個数: 32

約数和(自身を含む): 36306144

約数和(自身を除く): 14927842

約数列:

[1, 2, 11, 22, 41, 82, 137, 173, 274, 346, 451, 902, 1507, 1903, 3014, 3806, 5617, 7093, 11234, 14186, 23701, 47402, 61787, 78023, 123574, 156046, 260711, 521422, 971741, 1943482, 10689151, 21378302]

約数ペア:

[(1, 21378302), (2, 10689151), (11, 1943482), (22, 971741), (41, 521422), (82, 260711), (137, 156046), (173, 123574), (274, 78023), (346, 61787), (451, 47402), (902, 23701), (1507, 14186), (1903, 11234), (3014, 7093), (3806, 5617)]