21174128

素因数分解:

$2^4\times {\mathrm{1091}}^1\times {\mathrm{1213}}^1$

素因数の和:2312

約数の個数: 20

約数和(自身を含む): 41096328

約数和(自身を除く): 19922200

約数列:

[1, 2, 4, 8, 16, 1091, 1213, 2182, 2426, 4364, 4852, 8728, 9704, 17456, 19408, 1323383, 2646766, 5293532, 10587064, 21174128]

約数ペア:

[(1, 21174128), (2, 10587064), (4, 5293532), (8, 2646766), (16, 1323383), (1091, 19408), (1213, 17456), (2182, 9704), (2426, 8728), (4364, 4852)]