21575805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{401}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 36816768

約数和(自身を除く): 15240963

約数列:

[1, 3, 5, 15, 17, 51, 85, 211, 255, 401, 633, 1055, 1203, 2005, 3165, 3587, 6015, 6817, 10761, 17935, 20451, 34085, 53805, 84611, 102255, 253833, 423055, 1269165, 1438387, 4315161, 7191935, 21575805]

約数ペア:

[(1, 21575805), (3, 7191935), (5, 4315161), (15, 1438387), (17, 1269165), (51, 423055), (85, 253833), (211, 102255), (255, 84611), (401, 53805), (633, 34085), (1055, 20451), (1203, 17935), (2005, 10761), (3165, 6817), (3587, 6015)]