7980500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1451}}^1$

素因数の和:1481

約数の個数: 48

約数和(自身を含む): 19027008

約数和(自身を除く): 11046508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 1451, 2750, 2902, 5500, 5804, 7255, 14510, 15961, 29020, 31922, 36275, 63844, 72550, 79805, 145100, 159610, 181375, 319220, 362750, 399025, 725500, 798050, 1596100, 1995125, 3990250, 7980500]

約数ペア:

[(1, 7980500), (2, 3990250), (4, 1995125), (5, 1596100), (10, 798050), (11, 725500), (20, 399025), (22, 362750), (25, 319220), (44, 181375), (50, 159610), (55, 145100), (100, 79805), (110, 72550), (125, 63844), (220, 36275), (250, 31922), (275, 29020), (500, 15961), (550, 14510), (1100, 7255), (1375, 5804), (1451, 5500), (2750, 2902)]