20512890828

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{65957}}^1$

素因数の和:66183

約数の個数: 72

約数和(自身を含む): 53155288368

約数和(自身を除く): 32642397540

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 163, 212, 318, 326, 477, 489, 636, 652, 954, 978, 1467, 1908, 1956, 2934, 5868, 8639, 17278, 25917, 34556, 51834, 65957, 77751, 103668, 131914, 155502, 197871, 263828, 311004, 395742, 593613, 791484, 1187226, 2374452, 3495721, 6991442, 10487163, 10750991, 13982884, 20974326, 21501982, 31461489, 32252973, 41948652, 43003964, 62922978, 64505946, 96758919, 125845956, 129011892, 193517838, 387035676, 569802523, 1139605046, 1709407569, 2279210092, 3418815138, 5128222707, 6837630276, 10256445414, 20512890828]

約数ペア:

[(1, 20512890828), (2, 10256445414), (3, 6837630276), (4, 5128222707), (6, 3418815138), (9, 2279210092), (12, 1709407569), (18, 1139605046), (36, 569802523), (53, 387035676), (106, 193517838), (159, 129011892), (163, 125845956), (212, 96758919), (318, 64505946), (326, 62922978), (477, 43003964), (489, 41948652), (636, 32252973), (652, 31461489), (954, 21501982), (978, 20974326), (1467, 13982884), (1908, 10750991), (1956, 10487163), (2934, 6991442), (5868, 3495721), (8639, 2374452), (17278, 1187226), (25917, 791484), (34556, 593613), (51834, 395742), (65957, 311004), (77751, 263828), (103668, 197871), (131914, 155502)]