256318385

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 331776000

約数和(自身を除く): 75457615

約数列:

[1, 5, 29, 31, 127, 145, 155, 449, 635, 899, 2245, 3683, 3937, 4495, 13021, 13919, 18415, 19685, 57023, 65105, 69595, 114173, 285115, 403651, 570865, 1653667, 1767713, 2018255, 8268335, 8838565, 51263677, 256318385]

約数ペア:

[(1, 256318385), (5, 51263677), (29, 8838565), (31, 8268335), (127, 2018255), (145, 1767713), (155, 1653667), (449, 570865), (635, 403651), (899, 285115), (2245, 114173), (3683, 69595), (3937, 65105), (4495, 57023), (13021, 19685), (13919, 18415)]