21819623

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:734

約数の個数: 16

約数和(自身を含む): 25698816

約数和(自身を除く): 3879193

約数列:

[1, 7, 53, 103, 371, 571, 721, 3997, 5459, 30263, 38213, 58813, 211841, 411691, 3117089, 21819623]

約数ペア:

[(1, 21819623), (7, 3117089), (53, 411691), (103, 211841), (371, 58813), (571, 38213), (721, 30263), (3997, 5459)]