8408140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 19319328

約数和(自身を除く): 10911188

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 443, 730, 886, 949, 1460, 1772, 1898, 2215, 3796, 4430, 4745, 5759, 8860, 9490, 11518, 18980, 23036, 28795, 32339, 57590, 64678, 115180, 129356, 161695, 323390, 420407, 646780, 840814, 1681628, 2102035, 4204070, 8408140]

約数ペア:

[(1, 8408140), (2, 4204070), (4, 2102035), (5, 1681628), (10, 840814), (13, 646780), (20, 420407), (26, 323390), (52, 161695), (65, 129356), (73, 115180), (130, 64678), (146, 57590), (260, 32339), (292, 28795), (365, 23036), (443, 18980), (730, 11518), (886, 9490), (949, 8860), (1460, 5759), (1772, 4745), (1898, 4430), (2215, 3796)]