644427

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 1089504

約数和(自身を除く): 445077

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 193, 371, 477, 579, 1113, 1351, 1737, 3339, 4053, 10229, 12159, 30687, 71603, 92061, 214809, 644427]

約数ペア:

[(1, 644427), (3, 214809), (7, 92061), (9, 71603), (21, 30687), (53, 12159), (63, 10229), (159, 4053), (193, 3339), (371, 1737), (477, 1351), (579, 1113)]