80788780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139291}}^1$

素因数の和:139329

約数の個数: 24

約数和(自身を含む): 175507920

約数和(自身を除く): 94719140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 139291, 278582, 557164, 696455, 1392910, 2785820, 4039439, 8078878, 16157756, 20197195, 40394390, 80788780]

約数ペア:

[(1, 80788780), (2, 40394390), (4, 20197195), (5, 16157756), (10, 8078878), (20, 4039439), (29, 2785820), (58, 1392910), (116, 696455), (145, 557164), (290, 278582), (580, 139291)]