778848475

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{211}}^1\times {\mathrm{409}}^1$

素因数の和:668

約数の個数: 36

約数和(自身を含む): 1026612120

約数和(自身を除く): 247763645

約数列:

[1, 5, 19, 25, 95, 211, 361, 409, 475, 1055, 1805, 2045, 4009, 5275, 7771, 9025, 10225, 20045, 38855, 76171, 86299, 100225, 147649, 194275, 380855, 431495, 738245, 1639681, 1904275, 2157475, 3691225, 8198405, 31153939, 40992025, 155769695, 778848475]

約数ペア:

[(1, 778848475), (5, 155769695), (19, 40992025), (25, 31153939), (95, 8198405), (211, 3691225), (361, 2157475), (409, 1904275), (475, 1639681), (1055, 738245), (1805, 431495), (2045, 380855), (4009, 194275), (5275, 147649), (7771, 100225), (9025, 86299), (10225, 76171), (20045, 38855)]