18980516

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{727}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 34122816

約数和(自身を除く): 15142300

約数列:

[1, 2, 4, 61, 107, 122, 214, 244, 428, 727, 1454, 2908, 6527, 13054, 26108, 44347, 77789, 88694, 155578, 177388, 311156, 4745129, 9490258, 18980516]

約数ペア:

[(1, 18980516), (2, 9490258), (4, 4745129), (61, 311156), (107, 177388), (122, 155578), (214, 88694), (244, 77789), (428, 44347), (727, 26108), (1454, 13054), (2908, 6527)]