20873255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 28195776

約数和(自身を除く): 7322521

約数列:

[1, 5, 13, 53, 65, 73, 83, 265, 365, 415, 689, 949, 1079, 3445, 3869, 4399, 4745, 5395, 6059, 19345, 21995, 30295, 50297, 57187, 78767, 251485, 285935, 321127, 393835, 1605635, 4174651, 20873255]

約数ペア:

[(1, 20873255), (5, 4174651), (13, 1605635), (53, 393835), (65, 321127), (73, 285935), (83, 251485), (265, 78767), (365, 57187), (415, 50297), (689, 30295), (949, 21995), (1079, 19345), (3445, 6059), (3869, 5395), (4399, 4745)]