521995825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 725953536

約数和(自身を除く): 203957711

約数列:

[1, 5, 13, 25, 31, 65, 155, 197, 263, 325, 403, 775, 985, 1315, 2015, 2561, 3419, 4925, 6107, 6575, 8153, 10075, 12805, 17095, 30535, 40765, 51811, 64025, 79391, 85475, 105989, 152675, 203825, 259055, 396955, 529945, 673543, 1295275, 1606141, 1984775, 2649725, 3367715, 8030705, 16838575, 20879833, 40153525, 104399165, 521995825]

約数ペア:

[(1, 521995825), (5, 104399165), (13, 40153525), (25, 20879833), (31, 16838575), (65, 8030705), (155, 3367715), (197, 2649725), (263, 1984775), (325, 1606141), (403, 1295275), (775, 673543), (985, 529945), (1315, 396955), (2015, 259055), (2561, 203825), (3419, 152675), (4925, 105989), (6107, 85475), (6575, 79391), (8153, 64025), (10075, 51811), (12805, 40765), (17095, 30535)]