12688520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1877}}^1$

素因数の和:1914

約数の個数: 48

約数和(自身を含む): 30930660

約数和(自身を除く): 18242140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 1877, 3380, 3754, 6760, 7508, 9385, 15016, 18770, 24401, 37540, 48802, 75080, 97604, 122005, 195208, 244010, 317213, 488020, 634426, 976040, 1268852, 1586065, 2537704, 3172130, 6344260, 12688520]

約数ペア:

[(1, 12688520), (2, 6344260), (4, 3172130), (5, 2537704), (8, 1586065), (10, 1268852), (13, 976040), (20, 634426), (26, 488020), (40, 317213), (52, 244010), (65, 195208), (104, 122005), (130, 97604), (169, 75080), (260, 48802), (338, 37540), (520, 24401), (676, 18770), (845, 15016), (1352, 9385), (1690, 7508), (1877, 6760), (3380, 3754)]