28309815

素因数分解:

$3^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{997}}^1$

素因数の和:1639

約数の個数: 24

約数和(自身を含む): 49197408

約数和(自身を除く): 20887593

約数列:

[1, 3, 5, 9, 15, 45, 631, 997, 1893, 2991, 3155, 4985, 5679, 8973, 9465, 14955, 28395, 44865, 629107, 1887321, 3145535, 5661963, 9436605, 28309815]

約数ペア:

[(1, 28309815), (3, 9436605), (5, 5661963), (9, 3145535), (15, 1887321), (45, 629107), (631, 44865), (997, 28395), (1893, 14955), (2991, 9465), (3155, 8973), (4985, 5679)]