20830540

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 24327860

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 127, 139, 236, 254, 278, 295, 508, 556, 590, 635, 695, 1180, 1270, 1390, 2540, 2780, 7493, 8201, 14986, 16402, 17653, 29972, 32804, 35306, 37465, 41005, 70612, 74930, 82010, 88265, 149860, 164020, 176530, 353060, 1041527, 2083054, 4166108, 5207635, 10415270, 20830540]

約数ペア:

[(1, 20830540), (2, 10415270), (4, 5207635), (5, 4166108), (10, 2083054), (20, 1041527), (59, 353060), (118, 176530), (127, 164020), (139, 149860), (236, 88265), (254, 82010), (278, 74930), (295, 70612), (508, 41005), (556, 37465), (590, 35306), (635, 32804), (695, 29972), (1180, 17653), (1270, 16402), (1390, 14986), (2540, 8201), (2780, 7493)]