821879575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{401}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 1157470560

約数和(自身を除く): 335590985

約数列:

[1, 5, 11, 25, 29, 55, 145, 257, 275, 319, 401, 725, 1285, 1595, 2005, 2827, 4411, 6425, 7453, 7975, 10025, 11629, 14135, 22055, 37265, 58145, 70675, 81983, 103057, 110275, 127919, 186325, 290725, 409915, 515285, 639595, 1133627, 2049575, 2576425, 2988653, 3197975, 5668135, 14943265, 28340675, 32875183, 74716325, 164375915, 821879575]

約数ペア:

[(1, 821879575), (5, 164375915), (11, 74716325), (25, 32875183), (29, 28340675), (55, 14943265), (145, 5668135), (257, 3197975), (275, 2988653), (319, 2576425), (401, 2049575), (725, 1133627), (1285, 639595), (1595, 515285), (2005, 409915), (2827, 290725), (4411, 186325), (6425, 127919), (7453, 110275), (7975, 103057), (10025, 81983), (11629, 70675), (14135, 58145), (22055, 37265)]