21970785

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1277}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 37297152

約数和(自身を除く): 15326367

約数列:

[1, 3, 5, 15, 31, 37, 93, 111, 155, 185, 465, 555, 1147, 1277, 3441, 3831, 5735, 6385, 17205, 19155, 39587, 47249, 118761, 141747, 197935, 236245, 593805, 708735, 1464719, 4394157, 7323595, 21970785]

約数ペア:

[(1, 21970785), (3, 7323595), (5, 4394157), (15, 1464719), (31, 708735), (37, 593805), (93, 236245), (111, 197935), (155, 141747), (185, 118761), (465, 47249), (555, 39587), (1147, 19155), (1277, 17205), (3441, 6385), (3831, 5735)]