21981477

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{22271}}^1$

素因数の和:22328

約数の個数: 16

約数和(自身を含む): 34209792

約数和(自身を除く): 12228315

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 22271, 66813, 155897, 467691, 1046737, 3140211, 7327159, 21981477]

約数ペア:

[(1, 21981477), (3, 7327159), (7, 3140211), (21, 1046737), (47, 467691), (141, 155897), (329, 66813), (987, 22271)]