219098975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 310337280

約数和(自身を除く): 91238305

約数列:

[1, 5, 17, 19, 25, 43, 85, 95, 215, 323, 425, 475, 631, 731, 817, 1075, 1615, 3155, 3655, 4085, 8075, 10727, 11989, 13889, 15775, 18275, 20425, 27133, 53635, 59945, 69445, 135665, 203813, 268175, 299725, 347225, 461261, 515527, 678325, 1019065, 2306305, 2577635, 5095325, 8763959, 11531525, 12888175, 43819795, 219098975]

約数ペア:

[(1, 219098975), (5, 43819795), (17, 12888175), (19, 11531525), (25, 8763959), (43, 5095325), (85, 2577635), (95, 2306305), (215, 1019065), (323, 678325), (425, 515527), (475, 461261), (631, 347225), (731, 299725), (817, 268175), (1075, 203813), (1615, 135665), (3155, 69445), (3655, 59945), (4085, 53635), (8075, 27133), (10727, 20425), (11989, 18275), (13889, 15775)]