21074145

素因数分解:

$3^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1549}}^1$

素因数の和:2464

約数の個数: 16

約数和(自身を含む): 33777600

約数和(自身を除く): 12703455

約数列:

[1, 3, 5, 15, 907, 1549, 2721, 4535, 4647, 7745, 13605, 23235, 1404943, 4214829, 7024715, 21074145]

約数ペア:

[(1, 21074145), (3, 7024715), (5, 4214829), (15, 1404943), (907, 23235), (1549, 13605), (2721, 7745), (4535, 4647)]