20771968

素因数分解:

$2^7\times 7^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 27208832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 97, 112, 128, 194, 224, 239, 388, 448, 478, 679, 776, 896, 956, 1358, 1552, 1673, 1912, 2716, 3104, 3346, 3824, 5432, 6208, 6692, 7648, 10864, 12416, 13384, 15296, 21728, 23183, 26768, 30592, 43456, 46366, 53536, 86912, 92732, 107072, 162281, 185464, 214144, 324562, 370928, 649124, 741856, 1298248, 1483712, 2596496, 2967424, 5192992, 10385984, 20771968]

約数ペア:

[(1, 20771968), (2, 10385984), (4, 5192992), (7, 2967424), (8, 2596496), (14, 1483712), (16, 1298248), (28, 741856), (32, 649124), (56, 370928), (64, 324562), (97, 214144), (112, 185464), (128, 162281), (194, 107072), (224, 92732), (239, 86912), (388, 53536), (448, 46366), (478, 43456), (679, 30592), (776, 26768), (896, 23183), (956, 21728), (1358, 15296), (1552, 13384), (1673, 12416), (1912, 10864), (2716, 7648), (3104, 6692), (3346, 6208), (3824, 5432)]