20356180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1327}}^1$

素因数の和:1408

約数の個数: 48

約数和(自身を含む): 46851840

約数和(自身を除く): 26495660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 295, 590, 767, 1180, 1327, 1534, 2654, 3068, 3835, 5308, 6635, 7670, 13270, 15340, 17251, 26540, 34502, 69004, 78293, 86255, 156586, 172510, 313172, 345020, 391465, 782930, 1017809, 1565860, 2035618, 4071236, 5089045, 10178090, 20356180]

約数ペア:

[(1, 20356180), (2, 10178090), (4, 5089045), (5, 4071236), (10, 2035618), (13, 1565860), (20, 1017809), (26, 782930), (52, 391465), (59, 345020), (65, 313172), (118, 172510), (130, 156586), (236, 86255), (260, 78293), (295, 69004), (590, 34502), (767, 26540), (1180, 17251), (1327, 15340), (1534, 13270), (2654, 7670), (3068, 6635), (3835, 5308)]