21681884

素因数分解:

$2^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{5197}}^1$

素因数の和:5357

約数の個数: 24

約数和(自身を含む): 43663200

約数和(自身を除く): 21981316

約数列:

[1, 2, 4, 7, 14, 28, 149, 298, 596, 1043, 2086, 4172, 5197, 10394, 20788, 36379, 72758, 145516, 774353, 1548706, 3097412, 5420471, 10840942, 21681884]

約数ペア:

[(1, 21681884), (2, 10840942), (4, 5420471), (7, 3097412), (14, 1548706), (28, 774353), (149, 145516), (298, 72758), (596, 36379), (1043, 20788), (2086, 10394), (4172, 5197)]