128216221

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1\times {\mathrm{1721}}^1$

素因数の和:2124

約数の個数: 16

約数和(自身を含む): 152087040

約数和(自身を除く): 23870819

約数列:

[1, 7, 29, 203, 367, 1721, 2569, 10643, 12047, 49909, 74501, 349363, 631607, 4421249, 18316603, 128216221]

約数ペア:

[(1, 128216221), (7, 18316603), (29, 4421249), (203, 631607), (367, 349363), (1721, 74501), (2569, 49909), (10643, 12047)]