28437780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67709}}^1$

素因数の和:67728

約数の個数: 48

約数和(自身を含む): 91002240

約数和(自身を除く): 62564460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 67709, 135418, 203127, 270836, 338545, 406254, 473963, 677090, 812508, 947926, 1015635, 1354180, 1421889, 1895852, 2031270, 2369815, 2843778, 4062540, 4739630, 5687556, 7109445, 9479260, 14218890, 28437780]

約数ペア:

[(1, 28437780), (2, 14218890), (3, 9479260), (4, 7109445), (5, 5687556), (6, 4739630), (7, 4062540), (10, 2843778), (12, 2369815), (14, 2031270), (15, 1895852), (20, 1421889), (21, 1354180), (28, 1015635), (30, 947926), (35, 812508), (42, 677090), (60, 473963), (70, 406254), (84, 338545), (105, 270836), (140, 203127), (210, 135418), (420, 67709)]