20509930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2203}}^1$

素因数の和:2243

約数の個数: 48

約数和(自身を含む): 45226080

約数和(自身を除く): 24716150

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2203, 4406, 4655, 9310, 11015, 15421, 22030, 30842, 41857, 77105, 83714, 107947, 154210, 209285, 215894, 292999, 418570, 539735, 585998, 1079470, 1464995, 2050993, 2929990, 4101986, 10254965, 20509930]

約数ペア:

[(1, 20509930), (2, 10254965), (5, 4101986), (7, 2929990), (10, 2050993), (14, 1464995), (19, 1079470), (35, 585998), (38, 539735), (49, 418570), (70, 292999), (95, 215894), (98, 209285), (133, 154210), (190, 107947), (245, 83714), (266, 77105), (490, 41857), (665, 30842), (931, 22030), (1330, 15421), (1862, 11015), (2203, 9310), (4406, 4655)]