256950005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{503}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 345461760

約数和(自身を除く): 88511755

約数列:

[1, 5, 13, 29, 65, 145, 271, 377, 503, 1355, 1885, 2515, 3523, 6539, 7859, 14587, 17615, 32695, 39295, 72935, 102167, 136313, 189631, 510835, 681565, 948155, 1772069, 3953077, 8860345, 19765385, 51390001, 256950005]

約数ペア:

[(1, 256950005), (5, 51390001), (13, 19765385), (29, 8860345), (65, 3953077), (145, 1772069), (271, 948155), (377, 681565), (503, 510835), (1355, 189631), (1885, 136313), (2515, 102167), (3523, 72935), (6539, 39295), (7859, 32695), (14587, 17615)]