20189584

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:775

約数の個数: 40

約数和(自身を含む): 41372352

約数和(自身を除く): 21182768

約数列:

[1, 2, 4, 8, 16, 23, 46, 83, 92, 166, 184, 332, 368, 661, 664, 1322, 1328, 1909, 2644, 3818, 5288, 7636, 10576, 15203, 15272, 30406, 30544, 54863, 60812, 109726, 121624, 219452, 243248, 438904, 877808, 1261849, 2523698, 5047396, 10094792, 20189584]

約数ペア:

[(1, 20189584), (2, 10094792), (4, 5047396), (8, 2523698), (16, 1261849), (23, 877808), (46, 438904), (83, 243248), (92, 219452), (166, 121624), (184, 109726), (332, 60812), (368, 54863), (661, 30544), (664, 30406), (1322, 15272), (1328, 15203), (1909, 10576), (2644, 7636), (3818, 5288)]