405740018

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{25117}}^1$

素因数の和:25357

約数の個数: 16

約数和(自身を含む): 626643864

約数和(自身を除く): 220903846

約数列:

[1, 2, 41, 82, 197, 394, 8077, 16154, 25117, 50234, 1029797, 2059594, 4948049, 9896098, 202870009, 405740018]

約数ペア:

[(1, 405740018), (2, 202870009), (41, 9896098), (82, 4948049), (197, 2059594), (394, 1029797), (8077, 50234), (16154, 25117)]