20470191

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1063}}^1$

素因数の和:1211

約数の個数: 24

約数和(自身を含む): 32022144

約数和(自身を除く): 11551953

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 1063, 2751, 3189, 6419, 7441, 19257, 22323, 52087, 139253, 156261, 417759, 974771, 2924313, 6823397, 20470191]

約数ペア:

[(1, 20470191), (3, 6823397), (7, 2924313), (21, 974771), (49, 417759), (131, 156261), (147, 139253), (393, 52087), (917, 22323), (1063, 19257), (2751, 7441), (3189, 6419)]