28118920

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{6221}}^1$

素因数の和:6345

約数の個数: 32

約数和(自身を含む): 63837720

約数和(自身を除く): 35718800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 6221, 12442, 24884, 31105, 49768, 62210, 124420, 248840, 702973, 1405946, 2811892, 3514865, 5623784, 7029730, 14059460, 28118920]

約数ペア:

[(1, 28118920), (2, 14059460), (4, 7029730), (5, 5623784), (8, 3514865), (10, 2811892), (20, 1405946), (40, 702973), (113, 248840), (226, 124420), (452, 62210), (565, 49768), (904, 31105), (1130, 24884), (2260, 12442), (4520, 6221)]