19917758075

素因数分解:

$5^2\times {\mathrm{31}}^2\times {\mathrm{409}}^1\times {\mathrm{2027}}^1$

素因数の和:2508

約数の個数: 36

約数和(自身を含む): 25595448840

約数和(自身を除く): 5677690765

約数列:

[1, 5, 25, 31, 155, 409, 775, 961, 2027, 2045, 4805, 10135, 10225, 12679, 24025, 50675, 62837, 63395, 314185, 316975, 393049, 829043, 1570925, 1947947, 1965245, 4145215, 9739735, 9826225, 20726075, 25700333, 48698675, 128501665, 642508325, 796710323, 3983551615, 19917758075]

約数ペア:

[(1, 19917758075), (5, 3983551615), (25, 796710323), (31, 642508325), (155, 128501665), (409, 48698675), (775, 25700333), (961, 20726075), (2027, 9826225), (2045, 9739735), (4805, 4145215), (10135, 1965245), (10225, 1947947), (12679, 1570925), (24025, 829043), (50675, 393049), (62837, 316975), (63395, 314185)]