21671480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17477}}^1$

素因数の和:17519

約数の個数: 32

約数和(自身を含む): 50336640

約数和(自身を除く): 28665160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17477, 34954, 69908, 87385, 139816, 174770, 349540, 541787, 699080, 1083574, 2167148, 2708935, 4334296, 5417870, 10835740, 21671480]

約数ペア:

[(1, 21671480), (2, 10835740), (4, 5417870), (5, 4334296), (8, 2708935), (10, 2167148), (20, 1083574), (31, 699080), (40, 541787), (62, 349540), (124, 174770), (155, 139816), (248, 87385), (310, 69908), (620, 34954), (1240, 17477)]