20955040

素因数分解:

$2^5\times 5^1\times {\mathrm{130969}}^1$

素因数の和:130984

約数の個数: 24

約数和(自身を含む): 49506660

約数和(自身を除く): 28551620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130969, 261938, 523876, 654845, 1047752, 1309690, 2095504, 2619380, 4191008, 5238760, 10477520, 20955040]

約数ペア:

[(1, 20955040), (2, 10477520), (4, 5238760), (5, 4191008), (8, 2619380), (10, 2095504), (16, 1309690), (20, 1047752), (32, 654845), (40, 523876), (80, 261938), (160, 130969)]