21257750

素因数分解:

$2^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{3697}}^1$

素因数の和:3737

約数の個数: 32

約数和(自身を含む): 41535936

約数和(自身を除く): 20278186

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 115, 125, 230, 250, 575, 1150, 2875, 3697, 5750, 7394, 18485, 36970, 85031, 92425, 170062, 184850, 425155, 462125, 850310, 924250, 2125775, 4251550, 10628875, 21257750]

約数ペア:

[(1, 21257750), (2, 10628875), (5, 4251550), (10, 2125775), (23, 924250), (25, 850310), (46, 462125), (50, 425155), (115, 184850), (125, 170062), (230, 92425), (250, 85031), (575, 36970), (1150, 18485), (2875, 7394), (3697, 5750)]