18714789

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:497

約数の個数: 24

約数和(自身を含む): 27885312

約数和(自身を除く): 9170523

約数列:

[1, 3, 9, 47, 141, 151, 293, 423, 453, 879, 1359, 2637, 7097, 13771, 21291, 41313, 44243, 63873, 123939, 132729, 398187, 2079421, 6238263, 18714789]

約数ペア:

[(1, 18714789), (3, 6238263), (9, 2079421), (47, 398187), (141, 132729), (151, 123939), (293, 63873), (423, 44243), (453, 41313), (879, 21291), (1359, 13771), (2637, 7097)]