28381725

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2213}}^1$

素因数の和:2251

約数の個数: 48

約数和(自身を含む): 54907200

約数和(自身を除く): 26525475

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 2213, 2565, 4275, 6639, 11065, 12825, 19917, 33195, 42047, 55325, 59751, 99585, 126141, 165975, 210235, 298755, 378423, 497925, 630705, 1051175, 1135269, 1493775, 1892115, 3153525, 5676345, 9460575, 28381725]

約数ペア:

[(1, 28381725), (3, 9460575), (5, 5676345), (9, 3153525), (15, 1892115), (19, 1493775), (25, 1135269), (27, 1051175), (45, 630705), (57, 497925), (75, 378423), (95, 298755), (135, 210235), (171, 165975), (225, 126141), (285, 99585), (475, 59751), (513, 55325), (675, 42047), (855, 33195), (1425, 19917), (2213, 12825), (2565, 11065), (4275, 6639)]