20870240

素因数分解:

$2^5\times 5^1\times {\mathrm{130439}}^1$

素因数の和:130454

約数の個数: 24

約数和(自身を含む): 49306320

約数和(自身を除く): 28436080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130439, 260878, 521756, 652195, 1043512, 1304390, 2087024, 2608780, 4174048, 5217560, 10435120, 20870240]

約数ペア:

[(1, 20870240), (2, 10435120), (4, 5217560), (5, 4174048), (8, 2608780), (10, 2087024), (16, 1304390), (20, 1043512), (32, 652195), (40, 521756), (80, 260878), (160, 130439)]