19181420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3821}}^1$

素因数の和:4081

約数の個数: 24

約数和(自身を含む): 40452048

約数和(自身を除く): 21270628

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 3821, 5020, 7642, 15284, 19105, 38210, 76420, 959071, 1918142, 3836284, 4795355, 9590710, 19181420]

約数ペア:

[(1, 19181420), (2, 9590710), (4, 4795355), (5, 3836284), (10, 1918142), (20, 959071), (251, 76420), (502, 38210), (1004, 19105), (1255, 15284), (2510, 7642), (3821, 5020)]