131569180

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{26209}}^1$

素因数の和:26469

約数の個数: 24

約数和(自身を含む): 277406640

約数和(自身を除く): 145837460

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 26209, 52418, 104836, 131045, 262090, 524180, 6578459, 13156918, 26313836, 32892295, 65784590, 131569180]

約数ペア:

[(1, 131569180), (2, 65784590), (4, 32892295), (5, 26313836), (10, 13156918), (20, 6578459), (251, 524180), (502, 262090), (1004, 131045), (1255, 104836), (2510, 52418), (5020, 26209)]