21509710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113209}}^1$

素因数の和:113235

約数の個数: 16

約数和(自身を含む): 40755600

約数和(自身を除く): 19245890

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 113209, 226418, 566045, 1132090, 2150971, 4301942, 10754855, 21509710]

約数ペア:

[(1, 21509710), (2, 10754855), (5, 4301942), (10, 2150971), (19, 1132090), (38, 566045), (95, 226418), (190, 113209)]