72321821

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 24

約数和(自身を含む): 89376000

約数和(自身を除く): 17054179

約数列:

[1, 11, 13, 23, 121, 143, 253, 299, 1573, 1999, 2783, 3289, 21989, 25987, 36179, 45977, 241879, 285857, 505747, 597701, 3144427, 5563217, 6574711, 72321821]

約数ペア:

[(1, 72321821), (11, 6574711), (13, 5563217), (23, 3144427), (121, 597701), (143, 505747), (253, 285857), (299, 241879), (1573, 45977), (1999, 36179), (2783, 25987), (3289, 21989)]