21086504

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138727}}^1$

素因数の和:138752

約数の個数: 16

約数和(自身を含む): 41618400

約数和(自身を除く): 20531896

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138727, 277454, 554908, 1109816, 2635813, 5271626, 10543252, 21086504]

約数ペア:

[(1, 21086504), (2, 10543252), (4, 5271626), (8, 2635813), (19, 1109816), (38, 554908), (76, 277454), (152, 138727)]