21178660

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{6121}}^1$

素因数の和:6303

約数の個数: 24

約数和(自身を含む): 44739576

約数和(自身を除く): 23560916

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 6121, 12242, 24484, 30605, 61210, 122420, 1058933, 2117866, 4235732, 5294665, 10589330, 21178660]

約数ペア:

[(1, 21178660), (2, 10589330), (4, 5294665), (5, 4235732), (10, 2117866), (20, 1058933), (173, 122420), (346, 61210), (692, 30605), (865, 24484), (1730, 12242), (3460, 6121)]