21550977

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16188543

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 107, 139, 161, 207, 321, 417, 483, 749, 963, 973, 1251, 1449, 2247, 2461, 2919, 3197, 6741, 7383, 8757, 9591, 14873, 17227, 22149, 22379, 28773, 44619, 51681, 67137, 104111, 133857, 155043, 201411, 312333, 342079, 936999, 1026237, 2394553, 3078711, 7183659, 21550977]

約数ペア:

[(1, 21550977), (3, 7183659), (7, 3078711), (9, 2394553), (21, 1026237), (23, 936999), (63, 342079), (69, 312333), (107, 201411), (139, 155043), (161, 133857), (207, 104111), (321, 67137), (417, 51681), (483, 44619), (749, 28773), (963, 22379), (973, 22149), (1251, 17227), (1449, 14873), (2247, 9591), (2461, 8757), (2919, 7383), (3197, 6741)]