278375775

素因数分解:

$3^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 470219904

約数和(自身を除く): 191844129

約数列:

[1, 3, 5, 15, 25, 75, 83, 197, 227, 249, 415, 591, 681, 985, 1135, 1245, 2075, 2955, 3405, 4925, 5675, 6225, 14775, 16351, 17025, 18841, 44719, 49053, 56523, 81755, 94205, 134157, 223595, 245265, 282615, 408775, 471025, 670785, 1117975, 1226325, 1413075, 3353925, 3711677, 11135031, 18558385, 55675155, 92791925, 278375775]

約数ペア:

[(1, 278375775), (3, 92791925), (5, 55675155), (15, 18558385), (25, 11135031), (75, 3711677), (83, 3353925), (197, 1413075), (227, 1226325), (249, 1117975), (415, 670785), (591, 471025), (681, 408775), (985, 282615), (1135, 245265), (1245, 223595), (2075, 134157), (2955, 94205), (3405, 81755), (4925, 56523), (5675, 49053), (6225, 44719), (14775, 18841), (16351, 17025)]