21506764

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{229}}^1\times {\mathrm{443}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 38601360

約数和(自身を除く): 17094596

約数列:

[1, 2, 4, 53, 106, 212, 229, 443, 458, 886, 916, 1772, 12137, 23479, 24274, 46958, 48548, 93916, 101447, 202894, 405788, 5376691, 10753382, 21506764]

約数ペア:

[(1, 21506764), (2, 10753382), (4, 5376691), (53, 405788), (106, 202894), (212, 101447), (229, 93916), (443, 48548), (458, 46958), (886, 24274), (916, 23479), (1772, 12137)]