257641520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{169501}}^1$

素因数の和:169533

約数の個数: 40

約数和(自身を含む): 630547440

約数和(自身を除く): 372905920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 169501, 339002, 678004, 847505, 1356008, 1695010, 2712016, 3220519, 3390020, 6441038, 6780040, 12882076, 13560080, 16102595, 25764152, 32205190, 51528304, 64410380, 128820760, 257641520]

約数ペア:

[(1, 257641520), (2, 128820760), (4, 64410380), (5, 51528304), (8, 32205190), (10, 25764152), (16, 16102595), (19, 13560080), (20, 12882076), (38, 6780040), (40, 6441038), (76, 3390020), (80, 3220519), (95, 2712016), (152, 1695010), (190, 1356008), (304, 847505), (380, 678004), (760, 339002), (1520, 169501)]