21146960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8527}}^1$

素因数の和:8571

約数の個数: 40

約数和(自身を含む): 50758656

約数和(自身を除く): 29611696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8527, 17054, 34108, 42635, 68216, 85270, 136432, 170540, 264337, 341080, 528674, 682160, 1057348, 1321685, 2114696, 2643370, 4229392, 5286740, 10573480, 21146960]

約数ペア:

[(1, 21146960), (2, 10573480), (4, 5286740), (5, 4229392), (8, 2643370), (10, 2114696), (16, 1321685), (20, 1057348), (31, 682160), (40, 528674), (62, 341080), (80, 264337), (124, 170540), (155, 136432), (248, 85270), (310, 68216), (496, 42635), (620, 34108), (1240, 17054), (2480, 8527)]