215700280

素因数分解:

$2^3\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{4177}}^1$

素因数の和:5479

約数の個数: 32

約数和(自身を含む): 485817840

約数和(自身を除く): 270117560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1291, 2582, 4177, 5164, 6455, 8354, 10328, 12910, 16708, 20885, 25820, 33416, 41770, 51640, 83540, 167080, 5392507, 10785014, 21570028, 26962535, 43140056, 53925070, 107850140, 215700280]

約数ペア:

[(1, 215700280), (2, 107850140), (4, 53925070), (5, 43140056), (8, 26962535), (10, 21570028), (20, 10785014), (40, 5392507), (1291, 167080), (2582, 83540), (4177, 51640), (5164, 41770), (6455, 33416), (8354, 25820), (10328, 20885), (12910, 16708)]