21576988

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{883}}^1$

素因数の和:1077

約数の個数: 24

約数和(自身を含む): 38984400

約数和(自身を除く): 17407412

約数列:

[1, 2, 4, 41, 82, 149, 164, 298, 596, 883, 1766, 3532, 6109, 12218, 24436, 36203, 72406, 131567, 144812, 263134, 526268, 5394247, 10788494, 21576988]

約数ペア:

[(1, 21576988), (2, 10788494), (4, 5394247), (41, 526268), (82, 263134), (149, 144812), (164, 131567), (298, 72406), (596, 36203), (883, 24436), (1766, 12218), (3532, 6109)]