20979930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1091}}^1$

素因数の和:1742

約数の個数: 32

約数和(自身を含む): 50476608

約数和(自身を除く): 29496678

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 641, 1091, 1282, 1923, 2182, 3205, 3273, 3846, 5455, 6410, 6546, 9615, 10910, 16365, 19230, 32730, 699331, 1398662, 2097993, 3496655, 4195986, 6993310, 10489965, 20979930]

約数ペア:

[(1, 20979930), (2, 10489965), (3, 6993310), (5, 4195986), (6, 3496655), (10, 2097993), (15, 1398662), (30, 699331), (641, 32730), (1091, 19230), (1282, 16365), (1923, 10910), (2182, 9615), (3205, 6546), (3273, 6410), (3846, 5455)]