257436985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1399}}^1$

素因数の和:1585

約数の個数: 32

約数和(自身を含む): 352800000

約数和(自身を除く): 95363015

約数列:

[1, 5, 13, 19, 65, 95, 149, 247, 745, 1235, 1399, 1937, 2831, 6995, 9685, 14155, 18187, 26581, 36803, 90935, 132905, 184015, 208451, 345553, 1042255, 1727765, 2709863, 3960569, 13549315, 19802845, 51487397, 257436985]

約数ペア:

[(1, 257436985), (5, 51487397), (13, 19802845), (19, 13549315), (65, 3960569), (95, 2709863), (149, 1727765), (247, 1042255), (745, 345553), (1235, 208451), (1399, 184015), (1937, 132905), (2831, 90935), (6995, 36803), (9685, 26581), (14155, 18187)]