28163785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 10220855

約数列:

[1, 5, 13, 29, 65, 67, 145, 223, 335, 377, 871, 1115, 1885, 1943, 2899, 4355, 6467, 9715, 14495, 14941, 25259, 32335, 74705, 84071, 126295, 194233, 420355, 433289, 971165, 2166445, 5632757, 28163785]

約数ペア:

[(1, 28163785), (5, 5632757), (13, 2166445), (29, 971165), (65, 433289), (67, 420355), (145, 194233), (223, 126295), (335, 84071), (377, 74705), (871, 32335), (1115, 25259), (1885, 14941), (1943, 14495), (2899, 9715), (4355, 6467)]