21090545

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12821}}^1$

素因数の和:12880

約数の個数: 16

約数和(自身を含む): 29541888

約数和(自身を除く): 8451343

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 12821, 64105, 89747, 448735, 602587, 3012935, 4218109, 21090545]

約数ペア:

[(1, 21090545), (5, 4218109), (7, 3012935), (35, 602587), (47, 448735), (235, 89747), (329, 64105), (1645, 12821)]