16980425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8821}}^1$

素因数の和:8849

約数の個数: 24

約数和(自身を含む): 26254272

約数和(自身を除く): 9273847

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 8821, 44105, 61747, 97031, 220525, 308735, 485155, 679217, 1543675, 2425775, 3396085, 16980425]

約数ペア:

[(1, 16980425), (5, 3396085), (7, 2425775), (11, 1543675), (25, 679217), (35, 485155), (55, 308735), (77, 220525), (175, 97031), (275, 61747), (385, 44105), (1925, 8821)]