21081452

素因数分解:

$2^2\times 7^1\times {\mathrm{653}}^1\times {\mathrm{1153}}^1$

素因数の和:1817

約数の個数: 24

約数和(自身を含む): 42264096

約数和(自身を除く): 21182644

約数列:

[1, 2, 4, 7, 14, 28, 653, 1153, 1306, 2306, 2612, 4571, 4612, 8071, 9142, 16142, 18284, 32284, 752909, 1505818, 3011636, 5270363, 10540726, 21081452]

約数ペア:

[(1, 21081452), (2, 10540726), (4, 5270363), (7, 3011636), (14, 1505818), (28, 752909), (653, 32284), (1153, 18284), (1306, 16142), (2306, 9142), (2612, 8071), (4571, 4612)]