20168754417

素因数分解:

$3^2\times 7^2\times {\mathrm{2081}}^1\times {\mathrm{21977}}^1$

素因数の和:24078

約数の個数: 36

約数和(自身を含む): 33906823236

約数和(自身を除く): 13738068819

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2081, 6243, 14567, 18729, 21977, 43701, 65931, 101969, 131103, 153839, 197793, 305907, 461517, 917721, 1076873, 1384551, 3230619, 9691857, 45734137, 137202411, 320138959, 411607233, 960416877, 2240972713, 2881250631, 6722918139, 20168754417]

約数ペア:

[(1, 20168754417), (3, 6722918139), (7, 2881250631), (9, 2240972713), (21, 960416877), (49, 411607233), (63, 320138959), (147, 137202411), (441, 45734137), (2081, 9691857), (6243, 3230619), (14567, 1384551), (18729, 1076873), (21977, 917721), (43701, 461517), (65931, 305907), (101969, 197793), (131103, 153839)]