21964369

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{661}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 25929216

約数和(自身を除く): 3964847

約数列:

[1, 7, 47, 101, 329, 661, 707, 4627, 4747, 31067, 33229, 66761, 217469, 467327, 3137767, 21964369]

約数ペア:

[(1, 21964369), (7, 3137767), (47, 467327), (101, 217469), (329, 66761), (661, 33229), (707, 31067), (4627, 4747)]