20154085

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 8738075

約数列:

[1, 5, 7, 35, 37, 79, 185, 197, 259, 395, 553, 985, 1295, 1379, 2765, 2923, 6895, 7289, 14615, 15563, 20461, 36445, 51023, 77815, 102305, 108941, 255115, 544705, 575831, 2879155, 4030817, 20154085]

約数ペア:

[(1, 20154085), (5, 4030817), (7, 2879155), (35, 575831), (37, 544705), (79, 255115), (185, 108941), (197, 102305), (259, 77815), (395, 51023), (553, 36445), (985, 20461), (1295, 15563), (1379, 14615), (2765, 7289), (2923, 6895)]