31376781

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:570

約数の個数: 32

約数和(自身を含む): 49610880

約数和(自身を除く): 18234099

約数列:

[1, 3, 9, 17, 27, 51, 153, 197, 347, 459, 591, 1041, 1773, 3123, 3349, 5319, 5899, 9369, 10047, 17697, 30141, 53091, 68359, 90423, 159273, 205077, 615231, 1162103, 1845693, 3486309, 10458927, 31376781]

約数ペア:

[(1, 31376781), (3, 10458927), (9, 3486309), (17, 1845693), (27, 1162103), (51, 615231), (153, 205077), (197, 159273), (347, 90423), (459, 68359), (591, 53091), (1041, 30141), (1773, 17697), (3123, 10047), (3349, 9369), (5319, 5899)]