257788480

素因数分解:

$2^6\times 5^1\times {\mathrm{805589}}^1$

素因数の和:805606

約数の個数: 28

約数和(自身を含む): 613859580

約数和(自身を除く): 356071100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 805589, 1611178, 3222356, 4027945, 6444712, 8055890, 12889424, 16111780, 25778848, 32223560, 51557696, 64447120, 128894240, 257788480]

約数ペア:

[(1, 257788480), (2, 128894240), (4, 64447120), (5, 51557696), (8, 32223560), (10, 25778848), (16, 16111780), (20, 12889424), (32, 8055890), (40, 6444712), (64, 4027945), (80, 3222356), (160, 1611178), (320, 805589)]