20958273

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17509}}^1$

素因数の和:17541

約数の個数: 24

約数和(自身を含む): 36420800

約数和(自身を除く): 15462527

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17509, 52527, 122563, 157581, 332671, 367689, 998013, 1103067, 2328697, 2994039, 6986091, 20958273]

約数ペア:

[(1, 20958273), (3, 6986091), (7, 2994039), (9, 2328697), (19, 1103067), (21, 998013), (57, 367689), (63, 332671), (133, 157581), (171, 122563), (399, 52527), (1197, 17509)]