520000240

素因数分解:

$2^4\times 5^1\times {\mathrm{6500003}}^1$

素因数の和:6500016

約数の個数: 20

約数和(自身を含む): 1209000744

約数和(自身を除く): 689000504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6500003, 13000006, 26000012, 32500015, 52000024, 65000030, 104000048, 130000060, 260000120, 520000240]

約数ペア:

[(1, 520000240), (2, 260000120), (4, 130000060), (5, 104000048), (8, 65000030), (10, 52000024), (16, 32500015), (20, 26000012), (40, 13000006), (80, 6500003)]