21825209

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2339}}^1$

素因数の和:2420

約数の個数: 16

約数和(自身を含む): 26357760

約数和(自身を除く): 4532551

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2339, 9331, 16373, 72509, 100577, 507563, 704039, 3117887, 21825209]

約数ペア:

[(1, 21825209), (7, 3117887), (31, 704039), (43, 507563), (217, 100577), (301, 72509), (1333, 16373), (2339, 9331)]