20156989105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1\times {\mathrm{619}}^1$

素因数の和:1006

約数の個数: 64

約数和(自身を含む): 27769651200

約数和(自身を除く): 7612662095

約数列:

[1, 5, 11, 31, 55, 71, 155, 269, 341, 355, 619, 781, 1345, 1705, 2201, 2959, 3095, 3905, 6809, 8339, 11005, 14795, 19099, 19189, 24211, 34045, 41695, 43949, 91729, 95495, 95945, 121055, 166511, 210089, 211079, 219745, 458645, 483439, 592069, 832555, 1050445, 1055395, 1362419, 1831621, 2417195, 2960345, 5161841, 6512759, 6812095, 9158105, 11822281, 14986609, 25809205, 32563795, 56780251, 59111405, 74933045, 130045091, 283901255, 366490711, 650225455, 1832453555, 4031397821, 20156989105]

約数ペア:

[(1, 20156989105), (5, 4031397821), (11, 1832453555), (31, 650225455), (55, 366490711), (71, 283901255), (155, 130045091), (269, 74933045), (341, 59111405), (355, 56780251), (619, 32563795), (781, 25809205), (1345, 14986609), (1705, 11822281), (2201, 9158105), (2959, 6812095), (3095, 6512759), (3905, 5161841), (6809, 2960345), (8339, 2417195), (11005, 1831621), (14795, 1362419), (19099, 1055395), (19189, 1050445), (24211, 832555), (34045, 592069), (41695, 483439), (43949, 458645), (91729, 219745), (95495, 211079), (95945, 210089), (121055, 166511)]