19745985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2113}}^1$

素因数の和:2217

約数の個数: 32

約数和(自身を含む): 36529920

約数和(自身を除く): 16783935

約数列:

[1, 3, 5, 7, 15, 21, 35, 89, 105, 267, 445, 623, 1335, 1869, 2113, 3115, 6339, 9345, 10565, 14791, 31695, 44373, 73955, 188057, 221865, 564171, 940285, 1316399, 2820855, 3949197, 6581995, 19745985]

約数ペア:

[(1, 19745985), (3, 6581995), (5, 3949197), (7, 2820855), (15, 1316399), (21, 940285), (35, 564171), (89, 221865), (105, 188057), (267, 73955), (445, 44373), (623, 31695), (1335, 14791), (1869, 10565), (2113, 9345), (3115, 6339)]