640553305

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{409}}^1\times {\mathrm{1543}}^1$

素因数の和:1993

約数の個数: 32

約数和(自身を含む): 911577600

約数和(自身を除く): 271024295

約数列:

[1, 5, 7, 29, 35, 145, 203, 409, 1015, 1543, 2045, 2863, 7715, 10801, 11861, 14315, 44747, 54005, 59305, 83027, 223735, 313229, 415135, 631087, 1566145, 3155435, 4417609, 18301523, 22088045, 91507615, 128110661, 640553305]

約数ペア:

[(1, 640553305), (5, 128110661), (7, 91507615), (29, 22088045), (35, 18301523), (145, 4417609), (203, 3155435), (409, 1566145), (1015, 631087), (1543, 415135), (2045, 313229), (2863, 223735), (7715, 83027), (10801, 59305), (11861, 54005), (14315, 44747)]