20972876

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{563}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 37584960

約数和(自身を除く): 16612084

約数列:

[1, 2, 4, 67, 134, 139, 268, 278, 556, 563, 1126, 2252, 9313, 18626, 37252, 37721, 75442, 78257, 150884, 156514, 313028, 5243219, 10486438, 20972876]

約数ペア:

[(1, 20972876), (2, 10486438), (4, 5243219), (67, 313028), (134, 156514), (139, 150884), (268, 78257), (278, 75442), (556, 37721), (563, 37252), (1126, 18626), (2252, 9313)]