639804568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1811}}^1$

素因数の和:1952

約数の個数: 64

約数和(自身を含む): 1339430400

約数和(自身を除く): 699625832

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 79, 86, 104, 158, 172, 316, 344, 559, 632, 1027, 1118, 1811, 2054, 2236, 3397, 3622, 4108, 4472, 6794, 7244, 8216, 13588, 14488, 23543, 27176, 44161, 47086, 77873, 88322, 94172, 143069, 155746, 176644, 188344, 286138, 311492, 353288, 572276, 622984, 1012349, 1144552, 1859897, 2024698, 3719794, 4049396, 6151967, 7439588, 8098792, 12303934, 14879176, 24607868, 49215736, 79975571, 159951142, 319902284, 639804568]

約数ペア:

[(1, 639804568), (2, 319902284), (4, 159951142), (8, 79975571), (13, 49215736), (26, 24607868), (43, 14879176), (52, 12303934), (79, 8098792), (86, 7439588), (104, 6151967), (158, 4049396), (172, 3719794), (316, 2024698), (344, 1859897), (559, 1144552), (632, 1012349), (1027, 622984), (1118, 572276), (1811, 353288), (2054, 311492), (2236, 286138), (3397, 188344), (3622, 176644), (4108, 155746), (4472, 143069), (6794, 94172), (7244, 88322), (8216, 77873), (13588, 47086), (14488, 44161), (23543, 27176)]