31398471

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^2$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 50618568

約数和(自身を除く): 19220097

約数列:

[1, 3, 9, 13, 39, 43, 79, 117, 129, 237, 387, 559, 711, 1027, 1677, 3081, 3397, 5031, 6241, 9243, 10191, 18723, 30573, 44161, 56169, 81133, 132483, 243399, 268363, 397449, 730197, 805089, 2415267, 3488719, 10466157, 31398471]

約数ペア:

[(1, 31398471), (3, 10466157), (9, 3488719), (13, 2415267), (39, 805089), (43, 730197), (79, 397449), (117, 268363), (129, 243399), (237, 132483), (387, 81133), (559, 56169), (711, 44161), (1027, 30573), (1677, 18723), (3081, 10191), (3397, 9243), (5031, 6241)]