20642230

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:533

約数の個数: 48

約数和(自身を含む): 43748640

約数和(自身を除く): 23106410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 103, 206, 245, 409, 490, 515, 721, 818, 1030, 1442, 2045, 2863, 3605, 4090, 5047, 5726, 7210, 10094, 14315, 20041, 25235, 28630, 40082, 42127, 50470, 84254, 100205, 200410, 210635, 294889, 421270, 589778, 1474445, 2064223, 2948890, 4128446, 10321115, 20642230]

約数ペア:

[(1, 20642230), (2, 10321115), (5, 4128446), (7, 2948890), (10, 2064223), (14, 1474445), (35, 589778), (49, 421270), (70, 294889), (98, 210635), (103, 200410), (206, 100205), (245, 84254), (409, 50470), (490, 42127), (515, 40082), (721, 28630), (818, 25235), (1030, 20041), (1442, 14315), (2045, 10094), (2863, 7210), (3605, 5726), (4090, 5047)]