20791168

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 44553600

約数和(自身を除く): 23762432

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 83, 103, 128, 152, 166, 206, 304, 332, 412, 608, 664, 824, 1216, 1328, 1577, 1648, 1957, 2432, 2656, 3154, 3296, 3914, 5312, 6308, 6592, 7828, 8549, 10624, 12616, 13184, 15656, 17098, 25232, 31312, 34196, 50464, 62624, 68392, 100928, 125248, 136784, 162431, 201856, 250496, 273568, 324862, 547136, 649724, 1094272, 1299448, 2598896, 5197792, 10395584, 20791168]

約数ペア:

[(1, 20791168), (2, 10395584), (4, 5197792), (8, 2598896), (16, 1299448), (19, 1094272), (32, 649724), (38, 547136), (64, 324862), (76, 273568), (83, 250496), (103, 201856), (128, 162431), (152, 136784), (166, 125248), (206, 100928), (304, 68392), (332, 62624), (412, 50464), (608, 34196), (664, 31312), (824, 25232), (1216, 17098), (1328, 15656), (1577, 13184), (1648, 12616), (1957, 10624), (2432, 8549), (2656, 7828), (3154, 6592), (3296, 6308), (3914, 5312)]