20640125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{883}}^1$

素因数の和:926

約数の個数: 32

約数和(自身を含む): 29787264

約数和(自身を除く): 9147139

約数列:

[1, 5, 11, 17, 25, 55, 85, 125, 187, 275, 425, 883, 935, 1375, 2125, 4415, 4675, 9713, 15011, 22075, 23375, 48565, 75055, 110375, 165121, 242825, 375275, 825605, 1214125, 1876375, 4128025, 20640125]

約数ペア:

[(1, 20640125), (5, 4128025), (11, 1876375), (17, 1214125), (25, 825605), (55, 375275), (85, 242825), (125, 165121), (187, 110375), (275, 75055), (425, 48565), (883, 23375), (935, 22075), (1375, 15011), (2125, 9713), (4415, 4675)]