18980745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4409}}^1$

素因数の和:4465

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 16581495

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4409, 13227, 22045, 30863, 66135, 92589, 154315, 180769, 462945, 542307, 903845, 1265383, 2711535, 3796149, 6326915, 18980745]

約数ペア:

[(1, 18980745), (3, 6326915), (5, 3796149), (7, 2711535), (15, 1265383), (21, 903845), (35, 542307), (41, 462945), (105, 180769), (123, 154315), (205, 92589), (287, 66135), (615, 30863), (861, 22045), (1435, 13227), (4305, 4409)]