21000604415

素因数分解:

$5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{631}}^1\times {\mathrm{6841}}^1$

素因数の和:7623

約数の個数: 32

約数和(自身を含む): 29058247680

約数和(自身を除く): 8057643265

約数列:

[1, 5, 7, 35, 139, 631, 695, 973, 3155, 4417, 4865, 6841, 22085, 34205, 47887, 87709, 239435, 438545, 613963, 950899, 3069815, 4316671, 4754495, 6656293, 21583355, 30216697, 33281465, 151083485, 600017269, 3000086345, 4200120883, 21000604415]

約数ペア:

[(1, 21000604415), (5, 4200120883), (7, 3000086345), (35, 600017269), (139, 151083485), (631, 33281465), (695, 30216697), (973, 21583355), (3155, 6656293), (4417, 4754495), (4865, 4316671), (6841, 3069815), (22085, 950899), (34205, 613963), (47887, 438545), (87709, 239435)]