18878139441

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1984457}}^1$

素因数の和:1984621

約数の個数: 24

約数和(自身を含む): 31370312064

約数和(自身を除く): 12492172623

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 3171, 9513, 1984457, 5953371, 13891199, 17860113, 41673597, 125020791, 299653007, 898959021, 2097571049, 2696877063, 6292713147, 18878139441]

約数ペア:

[(1, 18878139441), (3, 6292713147), (7, 2696877063), (9, 2097571049), (21, 898959021), (63, 299653007), (151, 125020791), (453, 41673597), (1057, 17860113), (1359, 13891199), (3171, 5953371), (9513, 1984457)]