218971520

素因数分解:

$2^7\times 5^1\times {\mathrm{342143}}^1$

素因数の和:342162

約数の個数: 32

約数和(自身を含む): 523480320

約数和(自身を除く): 304508800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 342143, 684286, 1368572, 1710715, 2737144, 3421430, 5474288, 6842860, 10948576, 13685720, 21897152, 27371440, 43794304, 54742880, 109485760, 218971520]

約数ペア:

[(1, 218971520), (2, 109485760), (4, 54742880), (5, 43794304), (8, 27371440), (10, 21897152), (16, 13685720), (20, 10948576), (32, 6842860), (40, 5474288), (64, 3421430), (80, 2737144), (128, 1710715), (160, 1368572), (320, 684286), (640, 342143)]