28806925

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 45211392

約数和(自身を除く): 16404467

約数列:

[1, 5, 7, 17, 23, 25, 35, 85, 115, 119, 161, 175, 391, 421, 425, 575, 595, 805, 1955, 2105, 2737, 2947, 2975, 4025, 7157, 9683, 9775, 10525, 13685, 14735, 35785, 48415, 50099, 67781, 68425, 73675, 164611, 178925, 242075, 250495, 338905, 823055, 1152277, 1252475, 1694525, 4115275, 5761385, 28806925]

約数ペア:

[(1, 28806925), (5, 5761385), (7, 4115275), (17, 1694525), (23, 1252475), (25, 1152277), (35, 823055), (85, 338905), (115, 250495), (119, 242075), (161, 178925), (175, 164611), (391, 73675), (421, 68425), (425, 67781), (575, 50099), (595, 48415), (805, 35785), (1955, 14735), (2105, 13685), (2737, 10525), (2947, 9775), (2975, 9683), (4025, 7157)]