645921

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:565

約数の個数: 16

約数和(自身を含む): 979200

約数和(自身を除く): 333279

約数列:

[1, 3, 9, 27, 47, 141, 423, 509, 1269, 1527, 4581, 13743, 23923, 71769, 215307, 645921]

約数ペア:

[(1, 645921), (3, 215307), (9, 71769), (27, 23923), (47, 13743), (141, 4581), (423, 1527), (509, 1269)]