18827620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{743}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 45497088

約数和(自身を除く): 26669468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 362, 724, 743, 905, 1267, 1486, 1810, 2534, 2972, 3620, 3715, 5068, 5201, 6335, 7430, 10402, 12670, 14860, 20804, 25340, 26005, 52010, 104020, 134483, 268966, 537932, 672415, 941381, 1344830, 1882762, 2689660, 3765524, 4706905, 9413810, 18827620]

約数ペア:

[(1, 18827620), (2, 9413810), (4, 4706905), (5, 3765524), (7, 2689660), (10, 1882762), (14, 1344830), (20, 941381), (28, 672415), (35, 537932), (70, 268966), (140, 134483), (181, 104020), (362, 52010), (724, 26005), (743, 25340), (905, 20804), (1267, 14860), (1486, 12670), (1810, 10402), (2534, 7430), (2972, 6335), (3620, 5201), (3715, 5068)]