20847351

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52249}}^1$

素因数の和:52278

約数の個数: 16

約数和(自身を含む): 33440000

約数和(自身を除く): 12592649

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52249, 156747, 365743, 992731, 1097229, 2978193, 6949117, 20847351]

約数ペア:

[(1, 20847351), (3, 6949117), (7, 2978193), (19, 1097229), (21, 992731), (57, 365743), (133, 156747), (399, 52249)]