21196640

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{967}}^1$

素因数の和:1119

約数の個数: 48

約数和(自身を含む): 50494752

約数和(自身を除く): 29298112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 967, 1096, 1370, 1934, 2192, 2740, 3868, 4384, 4835, 5480, 7736, 9670, 10960, 15472, 19340, 21920, 30944, 38680, 77360, 132479, 154720, 264958, 529916, 662395, 1059832, 1324790, 2119664, 2649580, 4239328, 5299160, 10598320, 21196640]

約数ペア:

[(1, 21196640), (2, 10598320), (4, 5299160), (5, 4239328), (8, 2649580), (10, 2119664), (16, 1324790), (20, 1059832), (32, 662395), (40, 529916), (80, 264958), (137, 154720), (160, 132479), (274, 77360), (548, 38680), (685, 30944), (967, 21920), (1096, 19340), (1370, 15472), (1934, 10960), (2192, 9670), (2740, 7736), (3868, 5480), (4384, 4835)]