16400865

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{557}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 28498176

約数和(自身を除く): 12097311

約数列:

[1, 3, 5, 13, 15, 39, 65, 151, 195, 453, 557, 755, 1671, 1963, 2265, 2785, 5889, 7241, 8355, 9815, 21723, 29445, 36205, 84107, 108615, 252321, 420535, 1093391, 1261605, 3280173, 5466955, 16400865]

約数ペア:

[(1, 16400865), (3, 5466955), (5, 3280173), (13, 1261605), (15, 1093391), (39, 420535), (65, 252321), (151, 108615), (195, 84107), (453, 36205), (557, 29445), (755, 21723), (1671, 9815), (1963, 8355), (2265, 7241), (2785, 5889)]