20997867

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{9497}}^1$

素因数の和:9578

約数の個数: 16

約数和(自身を含む): 31001472

約数和(自身を除く): 10003605

約数列:

[1, 3, 11, 33, 67, 201, 737, 2211, 9497, 28491, 104467, 313401, 636299, 1908897, 6999289, 20997867]

約数ペア:

[(1, 20997867), (3, 6999289), (11, 1908897), (33, 636299), (67, 313401), (201, 104467), (737, 28491), (2211, 9497)]