20799415

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2689}}^1$

素因数の和:2731

約数の個数: 32

約数和(自身を含む): 32538240

約数和(自身を除く): 11738825

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 455, 595, 1105, 1547, 2689, 7735, 13445, 18823, 34957, 45713, 94115, 174785, 228565, 244699, 319991, 594269, 1223495, 1599955, 2971345, 4159883, 20799415]

約数ペア:

[(1, 20799415), (5, 4159883), (7, 2971345), (13, 1599955), (17, 1223495), (35, 594269), (65, 319991), (85, 244699), (91, 228565), (119, 174785), (221, 94115), (455, 45713), (595, 34957), (1105, 18823), (1547, 13445), (2689, 7735)]