21439456

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15581}}^1$

素因数の和:15634

約数の個数: 24

約数和(自身を含む): 43193304

約数和(自身を除く): 21753848

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15581, 31162, 62324, 124648, 249296, 498592, 669983, 1339966, 2679932, 5359864, 10719728, 21439456]

約数ペア:

[(1, 21439456), (2, 10719728), (4, 5359864), (8, 2679932), (16, 1339966), (32, 669983), (43, 498592), (86, 249296), (172, 124648), (344, 62324), (688, 31162), (1376, 15581)]