201421820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{1291}}^1$

素因数の和:1598

約数の個数: 48

約数和(自身を含む): 439538400

約数和(自身を除く): 238116580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 269, 290, 538, 580, 1076, 1291, 1345, 2582, 2690, 5164, 5380, 6455, 7801, 12910, 15602, 25820, 31204, 37439, 39005, 74878, 78010, 149756, 156020, 187195, 347279, 374390, 694558, 748780, 1389116, 1736395, 3472790, 6945580, 10071091, 20142182, 40284364, 50355455, 100710910, 201421820]

約数ペア:

[(1, 201421820), (2, 100710910), (4, 50355455), (5, 40284364), (10, 20142182), (20, 10071091), (29, 6945580), (58, 3472790), (116, 1736395), (145, 1389116), (269, 748780), (290, 694558), (538, 374390), (580, 347279), (1076, 187195), (1291, 156020), (1345, 149756), (2582, 78010), (2690, 74878), (5164, 39005), (5380, 37439), (6455, 31204), (7801, 25820), (12910, 15602)]