81814705

素因数分解:

$5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 115153920

約数和(自身を除く): 33339215

約数列:

[1, 5, 7, 35, 67, 139, 251, 335, 469, 695, 973, 1255, 1757, 2345, 4865, 8785, 9313, 16817, 34889, 46565, 65191, 84085, 117719, 174445, 244223, 325955, 588595, 1221115, 2337563, 11687815, 16362941, 81814705]

約数ペア:

[(1, 81814705), (5, 16362941), (7, 11687815), (35, 2337563), (67, 1221115), (139, 588595), (251, 325955), (335, 244223), (469, 174445), (695, 117719), (973, 84085), (1255, 65191), (1757, 46565), (2345, 34889), (4865, 16817), (8785, 9313)]