25281580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{16001}}^1$

素因数の和:16089

約数の個数: 24

約数和(自身を含む): 53766720

約数和(自身を除く): 28485140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 16001, 32002, 64004, 80005, 160010, 320020, 1264079, 2528158, 5056316, 6320395, 12640790, 25281580]

約数ペア:

[(1, 25281580), (2, 12640790), (4, 6320395), (5, 5056316), (10, 2528158), (20, 1264079), (79, 320020), (158, 160010), (316, 80005), (395, 64004), (790, 32002), (1580, 16001)]