639997278

素因数分解:

$2^1\times 3^1\times {\mathrm{73}}^1\times {\mathrm{1461181}}^1$

素因数の和:1461259

約数の個数: 16

約数和(自身を含む): 1297529616

約数和(自身を除く): 657532338

約数列:

[1, 2, 3, 6, 73, 146, 219, 438, 1461181, 2922362, 4383543, 8767086, 106666213, 213332426, 319998639, 639997278]

約数ペア:

[(1, 639997278), (2, 319998639), (3, 213332426), (6, 106666213), (73, 8767086), (146, 4383543), (219, 2922362), (438, 1461181)]