28720827

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 42378336

約数和(自身を除く): 13657509

約数列:

[1, 3, 9, 97, 167, 197, 291, 501, 591, 873, 1503, 1773, 16199, 19109, 32899, 48597, 57327, 98697, 145791, 171981, 296091, 3191203, 9573609, 28720827]

約数ペア:

[(1, 28720827), (3, 9573609), (9, 3191203), (97, 296091), (167, 171981), (197, 145791), (291, 98697), (501, 57327), (591, 48597), (873, 32899), (1503, 19109), (1773, 16199)]