19500078

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 43288560

約数和(自身を除く): 23788482

約数列:

[1, 2, 3, 6, 13, 26, 39, 53, 78, 89, 106, 159, 178, 267, 318, 534, 689, 1157, 1378, 2067, 2314, 2809, 3471, 4134, 4717, 5618, 6942, 8427, 9434, 14151, 16854, 28302, 36517, 61321, 73034, 109551, 122642, 183963, 219102, 250001, 367926, 500002, 750003, 1500006, 3250013, 6500026, 9750039, 19500078]

約数ペア:

[(1, 19500078), (2, 9750039), (3, 6500026), (6, 3250013), (13, 1500006), (26, 750003), (39, 500002), (53, 367926), (78, 250001), (89, 219102), (106, 183963), (159, 122642), (178, 109551), (267, 73034), (318, 61321), (534, 36517), (689, 28302), (1157, 16854), (1378, 14151), (2067, 9434), (2314, 8427), (2809, 6942), (3471, 5618), (4134, 4717)]