21554151

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 10863129

約数列:

[1, 3, 19, 23, 41, 57, 69, 123, 401, 437, 779, 943, 1203, 1311, 2337, 2829, 7619, 9223, 16441, 17917, 22857, 27669, 49323, 53751, 175237, 312379, 378143, 525711, 937137, 1134429, 7184717, 21554151]

約数ペア:

[(1, 21554151), (3, 7184717), (19, 1134429), (23, 937137), (41, 525711), (57, 378143), (69, 312379), (123, 175237), (401, 53751), (437, 49323), (779, 27669), (943, 22857), (1203, 17917), (1311, 16441), (2337, 9223), (2829, 7619)]