21225488

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30851}}^1$

素因数の和:30902

約数の個数: 20

約数和(自身を含む): 42082128

約数和(自身を除く): 20856640

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30851, 61702, 123404, 246808, 493616, 1326593, 2653186, 5306372, 10612744, 21225488]

約数ペア:

[(1, 21225488), (2, 10612744), (4, 5306372), (8, 2653186), (16, 1326593), (43, 493616), (86, 246808), (172, 123404), (344, 61702), (688, 30851)]