1988260

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1117}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 4226040

約数和(自身を除く): 2237780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1117, 1780, 2234, 4468, 5585, 11170, 22340, 99413, 198826, 397652, 497065, 994130, 1988260]

約数ペア:

[(1, 1988260), (2, 994130), (4, 497065), (5, 397652), (10, 198826), (20, 99413), (89, 22340), (178, 11170), (356, 5585), (445, 4468), (890, 2234), (1117, 1780)]