20179328

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 44182320

約数和(自身を除く): 24002992

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 67, 104, 128, 134, 181, 208, 268, 362, 416, 536, 724, 832, 871, 1072, 1448, 1664, 1742, 2144, 2353, 2896, 3484, 4288, 4706, 5792, 6968, 8576, 9412, 11584, 12127, 13936, 18824, 23168, 24254, 27872, 37648, 48508, 55744, 75296, 97016, 111488, 150592, 157651, 194032, 301184, 315302, 388064, 630604, 776128, 1261208, 1552256, 2522416, 5044832, 10089664, 20179328]

約数ペア:

[(1, 20179328), (2, 10089664), (4, 5044832), (8, 2522416), (13, 1552256), (16, 1261208), (26, 776128), (32, 630604), (52, 388064), (64, 315302), (67, 301184), (104, 194032), (128, 157651), (134, 150592), (181, 111488), (208, 97016), (268, 75296), (362, 55744), (416, 48508), (536, 37648), (724, 27872), (832, 24254), (871, 23168), (1072, 18824), (1448, 13936), (1664, 12127), (1742, 11584), (2144, 9412), (2353, 8576), (2896, 6968), (3484, 5792), (4288, 4706)]