20888325

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 40854528

約数和(自身を除く): 19966203

約数列:

[1, 3, 5, 9, 15, 17, 25, 43, 45, 51, 75, 85, 127, 129, 153, 215, 225, 255, 381, 387, 425, 635, 645, 731, 765, 1075, 1143, 1275, 1905, 1935, 2159, 2193, 3175, 3225, 3655, 3825, 5461, 5715, 6477, 6579, 9525, 9675, 10795, 10965, 16383, 18275, 19431, 27305, 28575, 32385, 32895, 49149, 53975, 54825, 81915, 92837, 97155, 136525, 161925, 164475, 245745, 278511, 409575, 464185, 485775, 835533, 1228725, 1392555, 2320925, 4177665, 6962775, 20888325]

約数ペア:

[(1, 20888325), (3, 6962775), (5, 4177665), (9, 2320925), (15, 1392555), (17, 1228725), (25, 835533), (43, 485775), (45, 464185), (51, 409575), (75, 278511), (85, 245745), (127, 164475), (129, 161925), (153, 136525), (215, 97155), (225, 92837), (255, 81915), (381, 54825), (387, 53975), (425, 49149), (635, 32895), (645, 32385), (731, 28575), (765, 27305), (1075, 19431), (1143, 18275), (1275, 16383), (1905, 10965), (1935, 10795), (2159, 9675), (2193, 9525), (3175, 6579), (3225, 6477), (3655, 5715), (3825, 5461)]