31219905

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{641}}^1$

素因数の和:857

約数の個数: 32

約数和(自身を含む): 53250048

約数和(自身を除く): 22030143

約数列:

[1, 3, 5, 15, 17, 51, 85, 191, 255, 573, 641, 955, 1923, 2865, 3205, 3247, 9615, 9741, 10897, 16235, 32691, 48705, 54485, 122431, 163455, 367293, 612155, 1836465, 2081327, 6243981, 10406635, 31219905]

約数ペア:

[(1, 31219905), (3, 10406635), (5, 6243981), (15, 2081327), (17, 1836465), (51, 612155), (85, 367293), (191, 163455), (255, 122431), (573, 54485), (641, 48705), (955, 32691), (1923, 16235), (2865, 10897), (3205, 9741), (3247, 9615)]