172800520

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{21929}}^1$

素因数の和:22137

約数の個数: 32

約数和(自身を含む): 390792600

約数和(自身を除く): 217992080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 21929, 43858, 87716, 109645, 175432, 219290, 438580, 877160, 4320013, 8640026, 17280052, 21600065, 34560104, 43200130, 86400260, 172800520]

約数ペア:

[(1, 172800520), (2, 86400260), (4, 43200130), (5, 34560104), (8, 21600065), (10, 17280052), (20, 8640026), (40, 4320013), (197, 877160), (394, 438580), (788, 219290), (985, 175432), (1576, 109645), (1970, 87716), (3940, 43858), (7880, 21929)]