20986112

素因数分解:

$2^8\times 7^3\times {\mathrm{239}}^1$

素因数の和:276

約数の個数: 72

約数和(自身を含む): 49056000

約数和(自身を除く): 28069888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 239, 256, 343, 392, 448, 478, 686, 784, 896, 956, 1372, 1568, 1673, 1792, 1912, 2744, 3136, 3346, 3824, 5488, 6272, 6692, 7648, 10976, 11711, 12544, 13384, 15296, 21952, 23422, 26768, 30592, 43904, 46844, 53536, 61184, 81977, 87808, 93688, 107072, 163954, 187376, 214144, 327908, 374752, 428288, 655816, 749504, 1311632, 1499008, 2623264, 2998016, 5246528, 10493056, 20986112]

約数ペア:

[(1, 20986112), (2, 10493056), (4, 5246528), (7, 2998016), (8, 2623264), (14, 1499008), (16, 1311632), (28, 749504), (32, 655816), (49, 428288), (56, 374752), (64, 327908), (98, 214144), (112, 187376), (128, 163954), (196, 107072), (224, 93688), (239, 87808), (256, 81977), (343, 61184), (392, 53536), (448, 46844), (478, 43904), (686, 30592), (784, 26768), (896, 23422), (956, 21952), (1372, 15296), (1568, 13384), (1673, 12544), (1792, 11711), (1912, 10976), (2744, 7648), (3136, 6692), (3346, 6272), (3824, 5488)]