81379425

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{769}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 144365760

約数和(自身を除く): 62986335

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 83, 85, 249, 255, 415, 425, 769, 1245, 1275, 1411, 2075, 2307, 3845, 4233, 6225, 7055, 11535, 13073, 19225, 21165, 35275, 39219, 57675, 63827, 65365, 105825, 191481, 196095, 319135, 326825, 957405, 980475, 1085059, 1595675, 3255177, 4787025, 5425295, 16275885, 27126475, 81379425]

約数ペア:

[(1, 81379425), (3, 27126475), (5, 16275885), (15, 5425295), (17, 4787025), (25, 3255177), (51, 1595675), (75, 1085059), (83, 980475), (85, 957405), (249, 326825), (255, 319135), (415, 196095), (425, 191481), (769, 105825), (1245, 65365), (1275, 63827), (1411, 57675), (2075, 39219), (2307, 35275), (3845, 21165), (4233, 19225), (6225, 13073), (7055, 11535)]