18660825

素因数分解:

$3^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:634

約数の個数: 36

約数和(自身を含む): 33673068

約数和(自身を除く): 15012243

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 197, 225, 421, 591, 985, 1263, 1773, 2105, 2955, 3789, 4925, 6315, 8865, 10525, 14775, 18945, 31575, 44325, 82937, 94725, 248811, 414685, 746433, 1244055, 2073425, 3732165, 6220275, 18660825]

約数ペア:

[(1, 18660825), (3, 6220275), (5, 3732165), (9, 2073425), (15, 1244055), (25, 746433), (45, 414685), (75, 248811), (197, 94725), (225, 82937), (421, 44325), (591, 31575), (985, 18945), (1263, 14775), (1773, 10525), (2105, 8865), (2955, 6315), (3789, 4925)]