20873601

素因数分解:

$3^2\times 7^1\times {\mathrm{421}}^1\times {\mathrm{787}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 34583744

約数和(自身を除く): 13710143

約数列:

[1, 3, 7, 9, 21, 63, 421, 787, 1263, 2361, 2947, 3789, 5509, 7083, 8841, 16527, 26523, 49581, 331327, 993981, 2319289, 2981943, 6957867, 20873601]

約数ペア:

[(1, 20873601), (3, 6957867), (7, 2981943), (9, 2319289), (21, 993981), (63, 331327), (421, 49581), (787, 26523), (1263, 16527), (2361, 8841), (2947, 7083), (3789, 5509)]