21146930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:543

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 23668750

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 103, 206, 245, 419, 490, 515, 721, 838, 1030, 1442, 2095, 2933, 3605, 4190, 5047, 5866, 7210, 10094, 14665, 20531, 25235, 29330, 41062, 43157, 50470, 86314, 102655, 205310, 215785, 302099, 431570, 604198, 1510495, 2114693, 3020990, 4229386, 10573465, 21146930]

約数ペア:

[(1, 21146930), (2, 10573465), (5, 4229386), (7, 3020990), (10, 2114693), (14, 1510495), (35, 604198), (49, 431570), (70, 302099), (98, 215785), (103, 205310), (206, 102655), (245, 86314), (419, 50470), (490, 43157), (515, 41062), (721, 29330), (838, 25235), (1030, 20531), (1442, 14665), (2095, 10094), (2933, 7210), (3605, 5866), (4190, 5047)]