18378243

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:356

約数の個数: 36

約数和(自身を含む): 29518632

約数和(自身を除く): 11140389

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 169, 281, 387, 507, 559, 843, 1521, 1677, 2529, 3653, 5031, 7267, 10959, 12083, 21801, 32877, 36249, 47489, 65403, 108747, 142467, 157079, 427401, 471237, 1413711, 2042027, 6126081, 18378243]

約数ペア:

[(1, 18378243), (3, 6126081), (9, 2042027), (13, 1413711), (39, 471237), (43, 427401), (117, 157079), (129, 142467), (169, 108747), (281, 65403), (387, 47489), (507, 36249), (559, 32877), (843, 21801), (1521, 12083), (1677, 10959), (2529, 7267), (3653, 5031)]