12931280

素因数分解:

$2^4\times 5^1\times {\mathrm{161641}}^1$

素因数の和:161654

約数の個数: 20

約数和(自身を含む): 30065412

約数和(自身を除く): 17134132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161641, 323282, 646564, 808205, 1293128, 1616410, 2586256, 3232820, 6465640, 12931280]

約数ペア:

[(1, 12931280), (2, 6465640), (4, 3232820), (5, 2586256), (8, 1616410), (10, 1293128), (16, 808205), (20, 646564), (40, 323282), (80, 161641)]