1645291225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 2191020480

約数和(自身を除く): 545729255

約数列:

[1, 5, 19, 25, 95, 131, 137, 193, 475, 655, 685, 965, 2489, 2603, 3275, 3425, 3667, 4825, 12445, 13015, 17947, 18335, 25283, 26441, 62225, 65075, 89735, 91675, 126415, 132205, 340993, 448675, 480377, 502379, 632075, 661025, 1704965, 2401885, 2511895, 3463771, 8524825, 12009425, 12559475, 17318855, 65811649, 86594275, 329058245, 1645291225]

約数ペア:

[(1, 1645291225), (5, 329058245), (19, 86594275), (25, 65811649), (95, 17318855), (131, 12559475), (137, 12009425), (193, 8524825), (475, 3463771), (655, 2511895), (685, 2401885), (965, 1704965), (2489, 661025), (2603, 632075), (3275, 502379), (3425, 480377), (3667, 448675), (4825, 340993), (12445, 132205), (13015, 126415), (17947, 91675), (18335, 89735), (25283, 65075), (26441, 62225)]