20985472

素因数分解:

$2^7\times {\mathrm{67}}^1\times {\mathrm{2447}}^1$

素因数の和:2528

約数の個数: 32

約数和(自身を含む): 42448320

約数和(自身を除く): 21462848

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 268, 536, 1072, 2144, 2447, 4288, 4894, 8576, 9788, 19576, 39152, 78304, 156608, 163949, 313216, 327898, 655796, 1311592, 2623184, 5246368, 10492736, 20985472]

約数ペア:

[(1, 20985472), (2, 10492736), (4, 5246368), (8, 2623184), (16, 1311592), (32, 655796), (64, 327898), (67, 313216), (128, 163949), (134, 156608), (268, 78304), (536, 39152), (1072, 19576), (2144, 9788), (2447, 8576), (4288, 4894)]