20565213116

素因数分解:

$2^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{557}}^1\times {\mathrm{15887}}^1$

素因数の和:16538

約数の個数: 48

約数和(自身を含む): 41703330816

約数和(自身を除く): 21138117700

約数列:

[1, 2, 4, 7, 14, 28, 83, 166, 332, 557, 581, 1114, 1162, 2228, 2324, 3899, 7798, 15596, 15887, 31774, 46231, 63548, 92462, 111209, 184924, 222418, 323617, 444836, 647234, 1294468, 1318621, 2637242, 5274484, 8849059, 9230347, 17698118, 18460694, 35396236, 36921388, 61943413, 123886826, 247773652, 734471897, 1468943794, 2937887588, 5141303279, 10282606558, 20565213116]

約数ペア:

[(1, 20565213116), (2, 10282606558), (4, 5141303279), (7, 2937887588), (14, 1468943794), (28, 734471897), (83, 247773652), (166, 123886826), (332, 61943413), (557, 36921388), (581, 35396236), (1114, 18460694), (1162, 17698118), (2228, 9230347), (2324, 8849059), (3899, 5274484), (7798, 2637242), (15596, 1318621), (15887, 1294468), (31774, 647234), (46231, 444836), (63548, 323617), (92462, 222418), (111209, 184924)]