31221827

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 40212480

約数和(自身を除く): 8990653

約数列:

[1, 7, 13, 43, 79, 91, 101, 301, 553, 559, 707, 1027, 1313, 3397, 3913, 4343, 7189, 7979, 9191, 23779, 30401, 44161, 55853, 56459, 103727, 309127, 343097, 395213, 726089, 2401679, 4460261, 31221827]

約数ペア:

[(1, 31221827), (7, 4460261), (13, 2401679), (43, 726089), (79, 395213), (91, 343097), (101, 309127), (301, 103727), (553, 56459), (559, 55853), (707, 44161), (1027, 30401), (1313, 23779), (3397, 9191), (3913, 7979), (4343, 7189)]