21248565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108967}}^1$

素因数の和:108988

約数の個数: 16

約数和(自身を含む): 36613248

約数和(自身を除く): 15364683

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108967, 326901, 544835, 1416571, 1634505, 4249713, 7082855, 21248565]

約数ペア:

[(1, 21248565), (3, 7082855), (5, 4249713), (13, 1634505), (15, 1416571), (39, 544835), (65, 326901), (195, 108967)]