21578949

素因数分解:

$3^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{743}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 35747712

約数和(自身を除く): 14168763

約数列:

[1, 3, 7, 9, 21, 63, 461, 743, 1383, 2229, 3227, 4149, 5201, 6687, 9681, 15603, 29043, 46809, 342523, 1027569, 2397661, 3082707, 7192983, 21578949]

約数ペア:

[(1, 21578949), (3, 7192983), (7, 3082707), (9, 2397661), (21, 1027569), (63, 342523), (461, 46809), (743, 29043), (1383, 15603), (2229, 9681), (3227, 6687), (4149, 5201)]