20291285

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 29963520

約数和(自身を除く): 9672235

約数列:

[1, 5, 7, 17, 35, 67, 85, 119, 335, 469, 509, 595, 1139, 2345, 2545, 3563, 5695, 7973, 8653, 17815, 34103, 39865, 43265, 60571, 170515, 238721, 302855, 579751, 1193605, 2898755, 4058257, 20291285]

約数ペア:

[(1, 20291285), (5, 4058257), (7, 2898755), (17, 1193605), (35, 579751), (67, 302855), (85, 238721), (119, 170515), (335, 60571), (469, 43265), (509, 39865), (595, 34103), (1139, 17815), (2345, 8653), (2545, 7973), (3563, 5695)]