640860981

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1\times {\mathrm{11987}}^1$

素因数の和:12312

約数の個数: 16

約数和(自身を含む): 870041088

約数和(自身を除く): 229180107

約数列:

[1, 3, 71, 213, 251, 753, 11987, 17821, 35961, 53463, 851077, 2553231, 3008737, 9026211, 213620327, 640860981]

約数ペア:

[(1, 640860981), (3, 213620327), (71, 9026211), (213, 3008737), (251, 2553231), (753, 851077), (11987, 53463), (17821, 35961)]