21730780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{16217}}^1$

素因数の和:16293

約数の個数: 24

約数和(自身を含む): 46318608

約数和(自身を除く): 24587828

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 16217, 32434, 64868, 81085, 162170, 324340, 1086539, 2173078, 4346156, 5432695, 10865390, 21730780]

約数ペア:

[(1, 21730780), (2, 10865390), (4, 5432695), (5, 4346156), (10, 2173078), (20, 1086539), (67, 324340), (134, 162170), (268, 81085), (335, 64868), (670, 32434), (1340, 16217)]