19489905

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{349}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 36363600

約数和(自身を除く): 16873695

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 73, 85, 153, 219, 255, 349, 365, 657, 765, 1047, 1095, 1241, 1745, 3141, 3285, 3723, 5235, 5933, 6205, 11169, 15705, 17799, 18615, 25477, 29665, 53397, 55845, 76431, 88995, 127385, 229293, 266985, 382155, 433109, 1146465, 1299327, 2165545, 3897981, 6496635, 19489905]

約数ペア:

[(1, 19489905), (3, 6496635), (5, 3897981), (9, 2165545), (15, 1299327), (17, 1146465), (45, 433109), (51, 382155), (73, 266985), (85, 229293), (153, 127385), (219, 88995), (255, 76431), (349, 55845), (365, 53397), (657, 29665), (765, 25477), (1047, 18615), (1095, 17799), (1241, 15705), (1745, 11169), (3141, 6205), (3285, 5933), (3723, 5235)]