20681856

素因数分解:

$2^7\times 3^2\times {\mathrm{13}}^1\times {\mathrm{1381}}^1$

素因数の和:1414

約数の個数: 96

約数和(自身を含む): 64138620

約数和(自身を除く): 43456764

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 64, 72, 78, 96, 104, 117, 128, 144, 156, 192, 208, 234, 288, 312, 384, 416, 468, 576, 624, 832, 936, 1152, 1248, 1381, 1664, 1872, 2496, 2762, 3744, 4143, 4992, 5524, 7488, 8286, 11048, 12429, 14976, 16572, 17953, 22096, 24858, 33144, 35906, 44192, 49716, 53859, 66288, 71812, 88384, 99432, 107718, 132576, 143624, 161577, 176768, 198864, 215436, 265152, 287248, 323154, 397728, 430872, 530304, 574496, 646308, 795456, 861744, 1148992, 1292616, 1590912, 1723488, 2297984, 2585232, 3446976, 5170464, 6893952, 10340928, 20681856]

約数ペア:

[(1, 20681856), (2, 10340928), (3, 6893952), (4, 5170464), (6, 3446976), (8, 2585232), (9, 2297984), (12, 1723488), (13, 1590912), (16, 1292616), (18, 1148992), (24, 861744), (26, 795456), (32, 646308), (36, 574496), (39, 530304), (48, 430872), (52, 397728), (64, 323154), (72, 287248), (78, 265152), (96, 215436), (104, 198864), (117, 176768), (128, 161577), (144, 143624), (156, 132576), (192, 107718), (208, 99432), (234, 88384), (288, 71812), (312, 66288), (384, 53859), (416, 49716), (468, 44192), (576, 35906), (624, 33144), (832, 24858), (936, 22096), (1152, 17953), (1248, 16572), (1381, 14976), (1664, 12429), (1872, 11048), (2496, 8286), (2762, 7488), (3744, 5524), (4143, 4992)]