216971013

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{543787}}^1$

素因数の和:543816

約数の個数: 16

約数和(自身を含む): 348024320

約数和(自身を除く): 131053307

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 543787, 1631361, 3806509, 10331953, 11419527, 30995859, 72323671, 216971013]

約数ペア:

[(1, 216971013), (3, 72323671), (7, 30995859), (19, 11419527), (21, 10331953), (57, 3806509), (133, 1631361), (399, 543787)]