20579720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1097}}^1$

素因数の和:1182

約数の個数: 64

約数和(自身を含む): 53758080

約数和(自身を除く): 33178360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1097, 1340, 1876, 2194, 2345, 2680, 3752, 4388, 4690, 5485, 7679, 8776, 9380, 10970, 15358, 18760, 21940, 30716, 38395, 43880, 61432, 73499, 76790, 146998, 153580, 293996, 307160, 367495, 514493, 587992, 734990, 1028986, 1469980, 2057972, 2572465, 2939960, 4115944, 5144930, 10289860, 20579720]

約数ペア:

[(1, 20579720), (2, 10289860), (4, 5144930), (5, 4115944), (7, 2939960), (8, 2572465), (10, 2057972), (14, 1469980), (20, 1028986), (28, 734990), (35, 587992), (40, 514493), (56, 367495), (67, 307160), (70, 293996), (134, 153580), (140, 146998), (268, 76790), (280, 73499), (335, 61432), (469, 43880), (536, 38395), (670, 30716), (938, 21940), (1097, 18760), (1340, 15358), (1876, 10970), (2194, 9380), (2345, 8776), (2680, 7679), (3752, 5485), (4388, 4690)]