20915457

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{6121}}^1$

素因数の和:6208

約数の個数: 16

約数和(自身を含む): 29973312

約数和(自身を除く): 9057855

約数列:

[1, 3, 17, 51, 67, 201, 1139, 3417, 6121, 18363, 104057, 312171, 410107, 1230321, 6971819, 20915457]

約数ペア:

[(1, 20915457), (3, 6971819), (17, 1230321), (51, 410107), (67, 312171), (201, 104057), (1139, 18363), (3417, 6121)]