16721480

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1103}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 37756800

約数和(自身を除く): 21035320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1103, 1516, 1895, 2206, 3032, 3790, 4412, 5515, 7580, 8824, 11030, 15160, 22060, 44120, 418037, 836074, 1672148, 2090185, 3344296, 4180370, 8360740, 16721480]

約数ペア:

[(1, 16721480), (2, 8360740), (4, 4180370), (5, 3344296), (8, 2090185), (10, 1672148), (20, 836074), (40, 418037), (379, 44120), (758, 22060), (1103, 15160), (1516, 11030), (1895, 8824), (2206, 7580), (3032, 5515), (3790, 4412)]